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what should i do?...

Yesterday at 1:55 PM sami131 10

Hi

I can not my software,I get this error"the specified procedure could not be found"

what should I do?

 

Hi,

 

I'm trying to create interactive plots by using Explore to help demonstrate the effects parameters have on functions. I created one successfully to illustrate shifts and stretches of a polynomial:

 

transform(A,B,X,H,P,K):=Explore(plot(a*(b*x+h)^(p)+k,x=X),parameters=[a=A, b= B,h=H,p=P,k=K],placement=right)

 

However when I try to do the same with a solved ODE it returns an error message:

 

Explore(plot(1/(-p*x+x+1)^(1/(p-1)), x = -5 .. 5), parameters = [p = -20 .. 20], placement = right);

 

Executing this gives the error message: 

Warning, expecting only range variable x in expression 1/((-p*x+x+1)^(1/(p-1))) to be plotted but found name p
INTERFACE_PLOT(AXESLABELS(x, ""),

VIEW(-5. .. 5., DEFAULT, _ATTRIBUTE("source" = "mathdefault"))),

parameters = [p = -20 .. 20], placement = right

 

I'm not sure why it is having difficulty dealing with "p" when it had no difficulty with the first. Any help would be appreciated!

The following is taken from p 328 of the Maple TA manual.

 

\documentclass[12pt]{article}
\usepackage{ed}
\begin{document}

\begin{question}{Formula}
% This question uses randomized variables.
\qutext{Find the formula for the inverse of the function
$f(x)=\var{a}x+\var{b}$.}
\answer{(x-\var{b})/\var{a}}
\code{
$a=int(rint(9)+2);
$b=int(rint(9)+2);
}
% The above code chooses random integer coefficients a and b between
% 2 and 10.
\end{question}

\end{document}

 

Running it though the online compiler generates the following when Service Pack 1 checkbox is UNCHECKED

Note: Successful conversion from LaTeX to QU does not guarantee that your testbank will load into Maple T.A. correctly. Please examine the contents of the box below for any additional errors that may be generated when your testbank is loaded into Maple T.A.

l2e_pkIwct.qu: Error at line 3.
Line ended while reading variable name (missing "=" at end of name?)

(A response of "[OK]" indicates that there should be no problems uploading your converted testbank file to Maple T.A.)

 

and the following when it is CHECKED

...

[30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44]
[45] [46] [47] [48] [49] [50] [51] [52])
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/html-mml.4ht)
(/usr/local/latex2edu/texmf/tex/local/ed/ed.4ht [53] [54]))
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/html4.4ht)
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/unicode.4ht)
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/html4-uni.4ht)
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/mathml.4ht)
(/usr/local/latex2edu/newt4ht/texmf/tex/generic/tex4ht/html-mml.4ht)
(/usr/local/latex2edu/texmf/tex/local/ed/ed.4ht))
No file l2e_yQsgNQ.aux.
)
*
! Emergency stop.
<*> \def\production{}\input l2e_yQsgNQ.tex

Output written on l2e_yQsgNQ.dvi (54 pages, 25316 bytes).
Transcript written on l2e_yQsgNQ.log.

 

 

What's going on?

Hello fellow members. I recently got a new laptop, and installed Maple of course. Everything went smoothly until I attempted to approximate an answer.

I got the error message:

"[5] Error, invalid input: expected evalf[] index to be of type posint but received %ARG1"

Approximation works perfectly on my other computer and old laptop.

Any help?

Hello friends;

I want to solve 3 - second orger equations with  6 unkowns. 

When i say just dsolve without boundry conditions it is solving but so complicated. 

_C6Ci  it is giving like that which i dont know the meaning of Ci.

But with boundry conditions it is not solving .

May you help me please where i am doing wrong. I downloaded the file.

Thanks.

Curvedbeam_static_variablethickness_analitik4.mw

Hello everybody!

My name is Mathew and I am a new member of this forum, and this is my first post, so please be lenient towards me:) I wanted to ask for help since my adventure with Maple 18 was supposed to start yesterday, unfortunately I encountered a problem I couldn't solve myself so far- my Maple 18 does not integrate. At all. It has no problem with differentiating, adding, subtracting and such, unfortunately any type of integral is unsolvable by Maple. I tried typing the easiest functions, such as e2xdx under the integral, unfortunately it is met with following message:

Error, (in int) wrong number (or type) of arguments: invalid option value passed to indefinite integration: {}.

I understood from several tutorials on the internet that this program should not have any problems with dealing with such form of formulas. What could be wrong? How to make  it work as it is supposed to?

Please help me. As I mentioned in the beginning, I am a new member, so in case I did something wrong or placed this post in wrong category- please forgive me;)

Hi, I installed Maple 17 a while back and was able to work all the commands but recently I reinstalled it
I tried a command which gave me an error that I never got before

>rightsum:=RiemannSum(1/x^2,x=50..75,partition=25,method=right,output=plot);


Error, (in Student:-Calculus1:-RiemannSum) external linking: error loading external library statshw.dll: The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail.

When I tried to reinstall the only issue was that it had trouble installing Visual C++ 2005 redistribute however I already have it on my computer and I don't intend to uninstall it since it took a long time to actually get my other programs to have it working. Is there anyhting I can do to fix this error? (Plotting other stuff seems to work fine except for Riemann Sums)

with(combinat); 

L:=permute([1$(n*(n-1)/2), 0$(n*(n-1)/2)], n*(n-1)/2);

 

Error, (in combinat:-permute) 2nd argument must be a non-negative integer

 

what is $ in permute?

Dear All,

i am solving a system of pde with boundar conditons then i got this error...

Error, (in pdsolve/numeric/plot) unable to compute solution for tau>HFloat(0.0):

Thank.

jeffrey_fluid.mw

restart

with(plots):

``

Pr := .71;

.71

 

1

 

1

 

1

(1)

PDE := {(diff(theta(eta, tau), eta, eta))/Pr+f(eta, tau)*(diff(theta(eta, tau), eta))-theta(eta, tau)*(diff(f(eta, tau), eta))-a*(diff(theta(eta, tau), tau)) = 0, diff(f(eta, tau), eta, eta, eta)+f(eta, tau)*(diff(f(eta, tau), eta, eta))-(diff(f(eta, tau), eta))^2-a*(diff(f(eta, tau), eta, tau))-K*(a*(diff(f(eta, tau), eta, eta, eta, tau))+2*(diff(f(eta, tau), eta))*(diff(f(eta, tau), eta, eta, eta))-(diff(f(eta, tau), eta, eta))^2-f(eta, tau)*(diff(f(eta, tau), eta, eta, eta, eta)))+lambda*(1+epsilon*cos(Pi*tau))*theta(eta, tau) = 0};

{1.408450704*(diff(diff(theta(eta, tau), eta), eta))+f(eta, tau)*(diff(theta(eta, tau), eta))-theta(eta, tau)*(diff(f(eta, tau), eta))-(diff(theta(eta, tau), tau)) = 0, diff(diff(diff(f(eta, tau), eta), eta), eta)+f(eta, tau)*(diff(diff(f(eta, tau), eta), eta))-(diff(f(eta, tau), eta))^2-(diff(diff(f(eta, tau), eta), tau))-K*(diff(diff(diff(diff(f(eta, tau), eta), eta), eta), tau)+2*(diff(f(eta, tau), eta))*(diff(diff(diff(f(eta, tau), eta), eta), eta))-(diff(diff(f(eta, tau), eta), eta))^2-f(eta, tau)*(diff(diff(diff(diff(f(eta, tau), eta), eta), eta), eta)))+(1+cos(Pi*tau))*theta(eta, tau) = 0}

(2)

IBC := {f(0, tau) = 0, f(10, tau) = 0, f(eta, 0) = 0, theta(0, tau) = 1, theta(10, tau) = 0, theta(eta, 0) = 0, (D[1](f))(0, tau) = 1, (D[1](f))(10, tau) = 0};

{f(0, tau) = 0, f(10, tau) = 0, f(eta, 0) = 0, theta(0, tau) = 1, theta(10, tau) = 0, theta(eta, 0) = 0, (D[1](f))(0, tau) = 1, (D[1](f))(10, tau) = 0}

(3)

L := [1]

[1]

(4)

for i to 1 do K := L[i]; pds := pdsolve(PDE, IBC, numeric, spacestep = 1/100); p[i] := plots[display]([seq(pds:-plot(f, tau = 1, eta = 0 .. 1, legend = L[i]), j = 5)]) end do

1

 

module () local INFO; export plot, plot3d, animate, value, settings; option `Copyright (c) 2001 by Waterloo Maple Inc. All rights reserved.`; end module

 

Error, (in pdsolve/numeric/plot) unable to compute solution for tau>HFloat(0.0):
Newton iteration is not converging

 

display({p[1]})

Error, (in plots:-display) expecting plot structures but received: {p[1]}

 

``

 

Download jeffrey_fluid.mw

with(Tolerances):

a := `&+-`(2, .5);

b := `&+-`(30, 10);

evalf(a*b);

with(ScientificErrorAnalysis):

a1 := Quantity(2, .5);

b1 := Quantity(30, 10);

combine(a1*b1, errors);

Dear everyone, 

       I want to deal with experimental data with error. I find two ways to do the job. But  the results are different .Could you tell me which one is more correct?

      Thank you.

Barry.

Dear All,

I am solving ODE with BC .. then im having this error.. (Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system)

Anyone could help me please?? :)

34.mw

``

restart; with(plots); l := .1; M := .5; B := .6; c1 := 1; R := .5; Pr := .72; N := .5; rho := 1; Bt := .6; Ec := .5; lambda := .1; S := .5; blt := 5

Eq1 := diff(f(eta), eta, eta, eta)+f(eta)*(diff(f(eta), eta))-2*(diff(f(eta), eta))^2+2*l*B*(diff(F(eta), eta)-(diff(f(eta), eta)))-M*(diff(f(eta), eta))-A*(2*(diff(f(eta), eta))+eta*(diff(f(eta), eta))) = 0;

diff(diff(diff(f(eta), eta), eta), eta)+f(eta)*(diff(f(eta), eta))-2*(diff(f(eta), eta))^2+.12*(diff(F(eta), eta))-.62*(diff(f(eta), eta))-A*(2*(diff(f(eta), eta))+eta*(diff(f(eta), eta))) = 0

(1)

Eq2 := F(eta)*(diff(F(eta), eta))-2*(diff(F(eta), eta))^2+2*B*(diff(f(eta), eta)-(diff(F(eta), eta))-A*(eta*(diff(F(eta), eta))-2*(diff(F(eta), eta)))) = 0

F(eta)*(diff(F(eta), eta))-2*(diff(F(eta), eta))^2+1.2*(diff(f(eta), eta))-1.2*(diff(F(eta), eta))-1.2*A*(eta*(diff(F(eta), eta))-2*(diff(F(eta), eta))) = 0

(2)

Eq3 := (1+(4/3)*R)*(diff(theta(eta), eta, eta))+Pr*((diff(theta(eta), eta))*f(eta)-c1*(diff(f(eta), eta))*theta(eta))+2*N*Pr*Bt*(theta1(eta)-theta(eta))/rho+2*N*B*Pr*Ec*(diff(F(eta), eta)-(diff(f(eta), eta)))^2/rho-A*Pr*(4*theta(eta)+eta*(diff(theta(eta), eta)))+2*lambda*Pr*theta(eta)+Pr*Ec*(diff(f(eta), eta))^2 = 0;

1.666666667*(diff(diff(theta(eta), eta), eta))+.72*(diff(theta(eta), eta))*f(eta)-.72*(diff(f(eta), eta))*theta(eta)+.4320*theta1(eta)-.2880*theta(eta)+.21600*(diff(F(eta), eta)-(diff(f(eta), eta)))^2-.72*A*(4*theta(eta)+eta*(diff(theta(eta), eta)))+.360*(diff(f(eta), eta))^2 = 0

(3)

Eq4 := c1*(diff(F(eta), eta))*theta1(eta)-F(eta)*(diff(theta1(eta), eta))+2*gamma*Bt*(theta1(eta)-theta(eta))+A*(4*theta1(eta)+eta*(diff(theta1(eta), eta))) = 0;

(diff(F(eta), eta))*theta1(eta)-F(eta)*(diff(theta1(eta), eta))+1.2*gamma*(theta1(eta)-theta(eta))+A*(4*theta1(eta)+eta*(diff(theta1(eta), eta))) = 0

(4)

bcs1 := f(0) = S, (D(f))(0) = 1, (D(f))(blt) = 0, (D(F))(blt) = 0, F(blt) = f(blt)+blt*(D(f))(blt)-blt*(D(F))(blt), theta(0) = 1, theta(blt) = 0, theta1(blt) = 0;

f(0) = .5, (D(f))(0) = 1, (D(f))(5) = 0, (D(F))(5) = 0, F(5) = f(5)+5*(D(f))(5)-5*(D(F))(5), theta(0) = 1, theta(5) = 0, theta1(5) = 0

(5)

L := [.1, .15, .2];

[.1, .15, .2]

(6)

for k to 3 do R := dsolve(eval({Eq1, Eq2, Eq3, Eq4, bcs1}, A = L[k]), [f(eta), F(eta), theta(eta), theta1(eta)], numeric, output = listprocedure); Y || k := rhs(R[3]); YP || k := rhs(R[4]); YR || k := rhs(R[5]); YQ || k := rhs(R[6]); YA || k := rhs(R[7]) end do

Error, (in dsolve/numeric/bvp/convertsys) unable to convert to an explicit first-order system

 

``

``

 

Download 34.mw

Aslam-u-Alikum. Hope you will be fine. I have some error in the last command of the attached file. I want this type of answer

 

StressesMultiplication := Matrix(2, 2, {(1, 1) = 7, (1, 2) = 10, (2, 1) = 15, (2, 2) = 22})

n.mw

PhD (Scholar)
Department of Mathematics

Heaviside2.mw

I am a new user of Maple (Dec 2014).  I am trying to calculate an integral related

to mechanical loss.  Temperature is a variable in the problem (as is time), and if

I use a sinusoidal (sine or cosine) temperature-time relationship, I think all works fine.

A difficulty is that the experiments have two-hour hold times(i.e., 7200 seconds) (followed by 22 hours of sinusoidal temperature variation.)

The experiments run for several weeks or months.

I tried using Heaviside functions to model the hold times.(Constant temperature periods)

Now I am receiving errors such as " Error, (in tools/eval_foo/do) too many levels of recursion..."

Probably the Maple code is crude and/or sloppy. Most of the code is simply the setting of constants in the problem.

I will be grateful for suggestions and comments--the file is attached.  Thank you.  John B

T__2 := 291.4:

T__f := 342.7:

B__f := 1265.:

A__0 := 0.452e-10:

`a__&sigma;` := 1.6072:

`b__&sigma;` := 5.6072:

mu := proc (x) options operator, arrow; .212008+0.21666e-2*x end proc:

t__age := 1800.:

`&sigma;__app` := 3.91:

T__0 := 303.15:

D__0 := proc (x) options operator, arrow; .103172+0.633333e-2*x end proc:

A__ex := B__f*T__f/(T__f-T__2)-`a__&sigma;`*`&sigma;__app`^2:

C__ex := B__f*T__f/(T__f-T__2)-`b__&sigma;`*`&sigma;__app`:

A__00 := A__0*exp(A__ex/T__0):

NULL

NumericEventHandler(invalid_operation = `Heaviside/EventHandler`(value_at_zero = 1)):

tm := proc (t) options operator, arrow; `mod`(t, 86400) end proc:(temperature cycle repeats every 24 hours = 86,400 seconds)

T3 := proc (x) options operator, arrow; (303.15+15.+15*sin((3/2)*Pi+2*Pi*(x-7200)/79200.))*(1-Heaviside(x)+Heaviside(x-7200)) end proc:

F3 := proc (x) options operator, arrow; (Heaviside(x)-Heaviside(x-7200))*303.15 end proc:

ftemp := proc (i) options operator, arrow; evalf(T3(tm(i))+F3(tm(i))) end proc:

C := proc (x) options operator, arrow; A__0*exp(C__ex/ftemp(x)) end proc:

`&tau;__0` := proc (x) options operator, arrow; sqrt(A__00^2*(t__age^mu(ftemp(x)))^2+C(x)^2*x^(2*mu(ftemp(x)))) end proc:

f__0 := proc (z) options operator, arrow; int(1/`&tau;__0`(x), x = 0 .. z) end proc:

g__0 := proc (y) options operator, arrow; D__0(ftemp(y))*exp(f__0(y)^.333333) end proc:

ftim := proc (i) options operator, arrow; 1800.*i end proc:

`&tau;__0`(20);

35860.86195

(1)

f__0(20)

Error, (in tools/eval_foo/do) too many levels of recursion

 

NULL

NULL

NULL

NULL

``

 

Download Heaviside2.mwHeaviside2.mw

Hello Maple


I am preparing for an examination in Calculus, but my worksheet in Maple 18 doesn't cooperate. 

A lot of my studypartners use Maple 16 and they have no problems. 


I meet the following error: 

- Error, (in solve) invalid input: hastype expects 2 arguments, but received 1


I'm totally sure, that I'm typing correctly, because I write just the same as my studypartners. 
So is it an error, which only is seen in Maple 18 and can I do anything to solve the problem?

Kind regards
Anders Kristensen

PS: I can't figure out how to add a picture

I am using the SumOverRepeatedIndices and get a Length of Output Exceeded error. Sometimes if I close the file and restart the program then I get a result and no error.  However, if I recalculate then I get the error.

 


restart; with(Physics); with(Tetrads)

[e_, eta_, gamma_, l_, lambda_, m_, mb_, n_]

(1)

`#msup(mi("ds",mathcolor = "#af00af"),mn("2",mathcolor = "#af00af"))` := Physics:-`*`(Physics:-`*`(2, dzeta), dzetabar)+Physics:-`*`(Physics:-`*`(2, du), dv)+Physics:-`*`(Physics:-`*`(2, H(zeta, zetabar, u, v)), (du+Physics:-`*`(Ybar(zeta, zetabar, u, v), dzeta)+Physics:-`*`(Y(zeta, zetabar, u, v), dzetabar)-Physics:-`*`(Physics:-`*`(Y(zeta, zetabar, u, v), Ybar(zeta, zetabar, u, v)), dv))^2)

2*dzeta*dzetabar+2*du*dv+2*H(zeta, zetabar, u, v)*(du+Ybar(zeta, zetabar, u, v)*dzeta+Y(zeta, zetabar, u, v)*dzetabar-Y(zeta, zetabar, u, v)*Ybar(zeta, zetabar, u, v)*dv)^2

(2)

X = [zeta, zetabar, u, v]

X = [zeta, zetabar, u, v]

(3)

PDEtools:-declare(`#msup(mi("ds",mathcolor = "#af00af"),mn("2",mathcolor = "#af00af"))`)

Ybar(zeta, zetabar, u, v)*`will now be displayed as`*Ybar

(4)

Setup(coordinates = (X = [zeta, zetabar, u, v]), metric = 2*dzeta*dzetabar+2*du*dv+2*H(zeta, zetabar, u, v)*(du+Ybar(zeta, zetabar, u, v)*dzeta+Y(zeta, zetabar, u, v)*dzetabar-Y(zeta, zetabar, u, v)*Ybar(zeta, zetabar, u, v)*dv)^2)

[coordinatesystems = {X}, metric = {(1, 1) = 2*H(X)*Ybar(X)^2, (1, 2) = 1+2*H(X)*Ybar(X)*Y(X), (1, 3) = 2*H(X)*Ybar(X), (1, 4) = -2*H(X)*Ybar(X)^2*Y(X), (2, 2) = 2*H(X)*Y(X)^2, (2, 3) = 2*H(X)*Y(X), (2, 4) = -2*H(X)*Y(X)^2*Ybar(X), (3, 3) = 2*H(X), (3, 4) = 1-2*H(X)*Ybar(X)*Y(X), (4, 4) = 2*H(X)*Y(X)^2*Ybar(X)^2}]

(5)

g_[]

g_[mu, nu] = (Matrix(4, 4, {(1, 1) = 2*H(X)*Ybar(X)^2, (1, 2) = 1+2*H(X)*Ybar(X)*Y(X), (1, 3) = 2*H(X)*Ybar(X), (1, 4) = -2*H(X)*Ybar(X)^2*Y(X), (2, 1) = 1+2*H(X)*Ybar(X)*Y(X), (2, 2) = 2*H(X)*Y(X)^2, (2, 3) = 2*H(X)*Y(X), (2, 4) = -2*H(X)*Y(X)^2*Ybar(X), (3, 1) = 2*H(X)*Ybar(X), (3, 2) = 2*H(X)*Y(X), (3, 3) = 2*H(X), (3, 4) = 1-2*H(X)*Ybar(X)*Y(X), (4, 1) = -2*H(X)*Ybar(X)^2*Y(X), (4, 2) = -2*H(X)*Y(X)^2*Ybar(X), (4, 3) = 1-2*H(X)*Ybar(X)*Y(X), (4, 4) = 2*H(X)*Y(X)^2*Ybar(X)^2}))

(6)

NULL

``

eqn1 := SumOverRepeatedIndices(Physics:-`*`(d_[mu](Y(Zeta, zetabar, u, v)), e_[1, `~mu`])) = 0

`[Length of output exceeds limit of 1000000]`

(7)

eqn2 := SumOverRepeatedIndices(Physics:-`*`(d_[mu](Y(Zeta, zetabar, u, v)), e_[2, `~mu`])) = 0

`[Length of output exceeds limit of 1000000]`

(8)

eqn3 := SumOverRepeatedIndices(Physics:-`*`(d_[mu](Y(Zeta, zetabar, u, v)), e_[4, `~mu`])) = x

(1/2)*(-(diff(Y(Zeta, zetabar, u, v), zetabar))*(Y(X)*Ybar(X)+1)*2^(1/2)+(diff(Y(Zeta, zetabar, u, v), u))*2^(1/2)*(Y(X)-Ybar(X))-(diff(Y(Zeta, zetabar, u, v), v))*2^(1/2)*(Y(X)-Ybar(X)))/((-(Ybar(X)^2+1)*(Y(X)^2+1)/(Y(X)-Ybar(X))^2)^(1/2)*(Y(X)-Ybar(X))) = x

(9)

eqn1 := `[Length of output exceeds limit of 1000000]` = 0

`[Length of output exceeds limit of 1000000]` = 0

(10)

algsubs(`[Length of output exceeds limit of 1000000]` = 0, `[Length of output exceeds limit of 1000000]`)

0

(11)

``

simplify(`[Length of output exceeds limit of 1000000]`)

``


Download Derive_Eq_4.4.mw

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