Maple Questions and Posts

Cannot evaluate the solution past the initial poin...

Asked by: nrsyhrhwhd 25

October 02 2018

1 2

Hi. Can anyone help me with this error, it says

Error, (in unknown) cannot evaluate the solution past the initial point, problem may be complex, initially singular or improperly set up

>

>	$Shootlib := "F:\MAPLE\3";$

(1)

>

$"F:MAPLE3", "C:\Program Files\Maple 2015\lib", "."$

(2)

>

(3)

>

(4)

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$ODE := {diff(`φp`(eta), eta) = (-f(eta)*`φp`(eta)+K*phi(eta)*(1-phi(eta))^2)*Sc, diff(f(eta), eta) = fp(eta), diff(fp(eta), eta) = fpp(eta), diff(fpp(eta), eta) = fppp(eta), diff(fppp(eta), eta) = (-fppp(eta)-f(eta)*fpp(eta)+k1*(2*fp(eta)*fppp(eta)-fpp(eta)^2)+lambda*fp(eta)+(1+Fr)*fp(eta)^2)/(k1*f(eta)), diff(phi(eta), eta) = `φp`(eta), diff(theta(eta), eta) = `θp`(eta), diff(`θp`(eta), eta) = (-f(eta)*`θp`(eta)+y*f(eta)*fp(eta)*`θp`(eta))/(1/Pr-y*f(eta)^2)}$

${diff(`φp`(eta), eta) = (-f(eta)*`φp`(eta)+K*phi(eta)*(1-phi(eta))^2)*Sc, diff(f(eta), eta) = fp(eta), diff(fp(eta), eta) = fpp(eta), diff(fpp(eta), eta) = fppp(eta), diff(fppp(eta), eta) = (-fppp(eta)-f(eta)*fpp(eta)+k1*(2*fp(eta)*fppp(eta)-fpp(eta)^2)+lambda*fp(eta)+(1+Fr)*fp(eta)^2)/(k1*f(eta)), diff(phi(eta), eta) = `φp`(eta), diff(theta(eta), eta) = `θp`(eta), diff(`θp`(eta), eta) = (-f(eta)*`θp`(eta)+y*f(eta)*fp(eta)*`θp`(eta))/(1/Pr-y*f(eta)^2)}$

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shoot: Step # 1

shoot: Parameter values : alpha = 3.0125 beta = -2.31 Psi = -0.

Error, (in unknown) cannot evaluate the solution past the initial point, problem may be complex, initially singular or improperly set up

>

Error, (in plots/odeplot) input is not a valid dsolve/numeric solution

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Error, (in plots:-display) expecting plot structure but received: p

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Error, (in plots/odeplot) input is not a valid dsolve/numeric solution

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Error, (in plots:-display) expecting plot structure but received: p2

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Error, (in plots/odeplot) input is not a valid dsolve/numeric solution

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Error, (in plots:-display) expecting plot structure but received: p3

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Download Darcy.mw

How do people test BIBD design in maple?...

Asked by: LeeHoYeung 535

September 27 2018

0 0

How do people test BIBD design in maple?

what are the different when using different field when test design ?

how to design a game that is suitable for the specified field of the design?

How to activate maple...

Asked by: thospi2 5

September 27 2018

1 1

How can I activate my maple 13?

I have no activatIon left but installed maple

once

My purchase Code is BNN7VMT4BPFN7ESG

Thank. You

Trivial solutions of Euler-Bernoulli Beam Vibratio...

Asked by: Ajju267 5

September 26 2018

1 2

Hi,

I am new to Maple and my task is to find an analytical solution of Lateral Vibrations of Beams. Even though I referred this forum to get an idea about solving a fourth order ODE bvp,I still couldn't find the solution. Although a non trivial solution exists for this case, Maple is still returning a trivial output(i.e the determinant is not returning zero). I need to find the value of constants C1 to C4 but I am unable to understand what the error is. I have attached the file containing my current solution below.

SOP2.mw

Any help will be appreciated,

Kind Regards,

Ajay

How to generate any points projective plane for se...

Asked by: LeeHoYeung 535

September 24 2018

0 0

How to generate any possible points projective plane for sets of numbers?

bonus is any possible field

Problem in drawing 2D graph...

Asked by: Muhammad Usman 240

September 23 2018

0 4

Hi Users!

Hope you all are fine here. I want to draw a graphs like this

Here

y(x)=21.70160211*x^2-35.93499295*x+19.00000000;

and

y(x-0.8)=21.70160211*(x-.8)^2-35.93499295*x+47.74799436

Please help me how to make this for x when y(x) on x-axis and y(x-0.8) on y-axis. I am waiting your positive response.

Thanks

How to write an equation without compiling?...

Asked by: uomcsg 40

September 19 2018

0 1

I computed A and B matrices, now I want to write it in state space reperentation.

diff(x(t), t) = A*x(t)+B*u

where

diff(x(t), t) = (Vector(6, {(1) = diff(alpha(t), t), (2) = diff(alpha(t), t, t), (3) = diff(y(t), t), (4) = diff(y(t), t, t), (5) = diff(theta(t), t), (6) = diff(theta(t), t, t)}))

So I calculated A*x(t)+B*u and got this:

$(Vector(6, {(1) = diff(alpha(t), t), (2) = diff(alpha(t), t, t), (3) = diff(y(t), t), (4) = diff(y(t), t, t), (5) = diff(theta(t), t), (6) = diff(theta(t), t, t)})) = (Vector(6, {(1) = 0, (2) = k/(J*R), (3) = 0, (4) = k/(M*R*r), (5) = 0, (6) = -k/(M*R*r*l)})).e+(Vector(6, {(1) = diff(alpha(t), t), (2) = -k^2*(diff(alpha(t), t))/(J*R), (3) = diff(y(t), t), (4) = -k^2*(diff(y(t), t))/(M*R*r^2)-m*g*theta(t)/M, (5) = diff(theta(t), t), (6) = k^2*(diff(y(t), t))/(M*R*r^2*l)+(M+m)*g*theta(t)/(M*l)}))$

where u=e but the formation is not A*x(t)+B*u anymore. How can I enforce Maple to output the result in the form of ?

solve partial differential equation by adomian dec...

Asked by: best flower 10

September 16 2018

0 1

‏‏‏‏I want to solve partial differential equation by adomian decomposition method, I have a mistake in define the nonlinear term, then the calculations of integral does not display , can anyone help me please

‏‏ADM_1.mw

How do I fix my corrupted file?...

Asked by: enigma50 10

September 14 2018

2 5

I get this message everytime I am trying to open my worksheet: "Recover Corrupt File and Save As"

2.G_anden_aflevering.mw

Save table settings?...

Asked by: GoBills3 10

September 14 2018

1 0

Is it possible to save table settings (and set a new default), so I dont have to manually change the "indent" number in every table i make in a document?

Its not possible to save the settings in the table menu itself, and there is no "table" option under preferences.

Almost Happy maple user on macbook pro 18

system of nonlinear ordinary differential equation...

Asked by: Bagh Ali 15

September 12 2018

1 21

I want to solve system of nonlinear ordinary differential equations numerically using the variational finite
element method (FEM). is it possible to solve on Maple? If anybody have a idea please share with me. I attach the image of my problem which I am tryimng to solve.

Crash Maple with only 11 letters...

Asked by: unproductive 20

September 07 2018

0 8

1) start cmaple.exe;

2) type "proc(x, x);", and watch Maple die;

3) Request a refund from Maplesoft.

How do I display a large matrix properly...

Asked by: jthress1 30

September 05 2018

1 0

Hello all,

I am presenting some results in a small meeting tomorrow and I have a rather large symbollic matrix that I was hoping to be able to view in a more readable form (once you see my code, you will see what I mean). This should be a simple fix. Furthermore, when I use the Latex command to recieve code to import into latex, its not working properly, which makes me think I made some kind of mistake. I am really just trying to get this matrix in its full for so that it is easy for other people to read. Thanks for any help.Turns_Latex.mw

A := Matrix(5, 5, [0, 0, 0, 0, 0, -AXX*UU-AXY*VV-AXZ*WW, AXX, AXY, AXZ, 0, -AXY*UU-AYY*VV-AYZ*WW, AXY, AYY, AYZ, 0, -AXZ*UU-AYZ*VV-AZZ*WW, AXZ, AYZ, AZZ, 0, -AXX*UU*UU-AYY*VV*VV-AZZ*WW*WW-(AXY*UU*VV+AXZ*UU*WW+AYZ*VV*WW)*2+(-E+2*UVW)*AE, -AE*UU-VL2, -AE*VV-VL3, -AE*WW-VL4, AE])

$A := subs(AXX = mu*(zeta__x^2+zeta__y^2+zeta__z^2+(1/3)*`#msup(mi("\`zeta__x\`"),mn("2"))`), AYY = mu*(`ζ__x`^2+`ζ__y`^2+`ζ__z`^2+(1/3)*`#msup(mi("\`ζ__y\`"),mn("2"))`), AZZ = mu*(`ζ__x`^2+`ζ__y`^2+`ζ__z`^2+(1/3)*`#msup(mi("\`ζ__z\`"),mn("2"))`), A)$

Matrix(%id = 18446744078321522678)

(1)

\left[ \begin {array}{ccccc} 0&0&0&0&0\\ \noalign{\medskip}-\mu\,
\left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt
\#msup(mi("zeta}}_{\mbox {{\tt x"),mn("2"))}}}/3 \right) u-1/3\,\mu\,
\zeta_{x}\,\zeta_{y}\,v-1/3\,\mu\,\zeta_{x}\,\zeta_{z}\,w&\mu\,
\left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt
\#msup(mi("zeta}}_{\mbox {{\tt x"),mn("2"))}}}/3 \right) &1/3\,\mu\,
\zeta_{x}\,\zeta_{y}&1/3\,\mu\,\zeta_{x}\,\zeta_{z}&0
\\ \noalign{\medskip}-1/3\,\mu\,\zeta_{x}\,\zeta_{y}\,u-\mu\, \left( {
\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt
\#msup(mi("zeta}}_{\mbox {{\tt y"),mn("2"))}}}/3 \right) v-1/3\,\mu\,
\zeta_{y}\,\zeta_{z}\,w&1/3\,\mu\,\zeta_{x}\,\zeta_{y}&\mu\, \left( {
\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt
\#msup(mi("zeta}}_{\mbox {{\tt y"),mn("2"))}}}/3 \right) &1/3\,\mu\,
\zeta_{y}\,\zeta_{z}&0\\ \noalign{\medskip}-1/3\,\mu\,\zeta_{x}\,\zeta
_{z}\,u-1/3\,\mu\,\zeta_{y}\,\zeta_{z}\,v-\mu\, \left( {\zeta_{x}}^{2}
+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{\mbox
{{\tt z"),mn("2"))}}}/3 \right) w&1/3\,\mu\,\zeta_{x}\,\zeta_{z}&1/3\,
\mu\,\zeta_{y}\,\zeta_{z}&\mu\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}
+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{\mbox {{\tt
z"),mn("2"))}}}/3 \right) &0\\ \noalign{\medskip}-\mu\, \left( {\zeta_
{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}
_{\mbox {{\tt x"),mn("2"))}}}/3 \right) {u}^{2}-\mu\, \left( {\zeta_{x
}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{
\mbox {{\tt y"),mn("2"))}}}/3 \right) {v}^{2}-\mu\, \left( {\zeta_{x}}
^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{
\mbox {{\tt z"),mn("2"))}}}/3 \right) {w}^{2}-2/3\,\mu\,\zeta_{x}\,
\zeta_{y}\,uv-2/3\,\mu\,\zeta_{x}\,\zeta_{z}\,uw-2/3\,\mu\,\zeta_{y}\,
\zeta_{z}\,vw+{\frac { \left( -E+2\,{\it UVW} \right) \mu\,\gamma\,
\left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2} \right) }{\Pr}
}&-{\frac {\mu\,\gamma\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta
_{z}}^{2} \right) u}{\Pr}}+\mu\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2
}+{\zeta_{z}}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{\mbox {{\tt
x"),mn("2"))}}}/3 \right) u+1/3\,\mu\,\zeta_{x}\,\zeta_{y}\,v+1/3\,\mu
\,\zeta_{x}\,\zeta_{z}\,w&-{\frac {\mu\,\gamma\, \left( {\zeta_{x}}^{2
}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2} \right) v}{\Pr}}+1/3\,\mu\,\zeta_{x}
\,\zeta_{y}\,u+\mu\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}
}^{2}+\mbox {{\tt \#msup(mi("zeta}}_{\mbox {{\tt y"),mn("2"))}}}/3
\right) v+1/3\,\mu\,\zeta_{y}\,\zeta_{z}\,w&-{\frac {\mu\,\gamma\,
\left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2} \right) w}{\Pr
}}+1/3\,\mu\,\zeta_{x}\,\zeta_{z}\,u+1/3\,\mu\,\zeta_{y}\,\zeta_{z}\,v
+\mu\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}+\mbox {{
\tt \#msup(mi("zeta}}_{\mbox {{\tt z"),mn("2"))}}}/3 \right) w&{\frac
{\mu\,\gamma\, \left( {\zeta_{x}}^{2}+{\zeta_{y}}^{2}+{\zeta_{z}}^{2}
\right) }{\Pr}}\end {array} \right]

Download Turns_Latex.mwTurns_Latex.mw

Error when solve system of differential equations...

Asked by: Prof. Sherif Ammar 10

September 03 2018

2 1

Dear Sir

There is error appears when we solve system of differential equations contains 13 equations ,

the form of error

Error, (in DEtools/convertsys) invalid terms in sum: -9*Y[8]+2 .. Y[3]+.3*Y[6]+.4*Y[7]+3.5*Y[11]+3.5*Y[13]

Hint we use dsolve, numerically

How to overcome on this error

Thanks

maple invalid input...

Asked by: shimaa sadk 50

September 02 2018

0 2

after i tryrring to instell another vergion of maple and it failed when i reinstell the older vergion of maple i get this error
what is missing and i did wronge

l := (n+m+sum(a[i], i = 1 .. n)+sum(b[j], j = 1 .. m))*ln(alpha)+n*ln(lambda[1])+m*ln(lambda[2])+lambda[1]*(sum(x[i], i = 1 .. n))+lambda[2]*(sum(y[j], j = 1 .. m))-(sum((2+a[i])*ln(exp(lambda[1]*x[i])-1+alpha), i = 1 .. n))-(sum((2+b[j])*ln(exp(lambda[2]*y[j])-1+alpha), j = 1 .. m));

Error, (in property/ConvertProperty) invalid input: PropRange uses a 2nd argument, b, which is missing

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