Hi,

I am connected to the linux version of Maple (xmaple) via putty and Xing (for GUI).

While the "big" code is running, I sometimes I got these messages,

But Maple (xmaple GUI) keeps running. It looks like it does not have an effect.

Should I be concerned?

How can I solve this problem on Maple?
Can anyone help me please ... I wrote another post before but I can not solve the problem.

lambda is an experimental parameter. I have this initial condition n(x,0)=0.4, c(x,0)=0.

Thanks to everyone

I want to get numerical solution of the Eqs.ode(see the folowlling ode and ibc）in Maple.However,when i run the following procedure,it prompts an error "Error, (in dsolve/numeric/bvp) cannot determine a suitable initial profile, please specify an approximate initial solution". How to solve the issue? Please help me.

restart:
n := 1.4; phi := 1; beta := .6931; psi := 1

> restart;
> n := 1.4; phi := 1; beta := .6931; psi := 1;

> s := proc (x) options operator, arrow; evalf(1+(phi*exp(beta*psi)*h(x))^n) end proc;

> Y := proc (x) options operator, arrow; evalf(f-(1/2-(1/2)/n)*ln(s(x))+2*ln(1-(1-s(x))^(-1+1/n))) end proc;

> ode := diff(h(x), `$`(x, 2))+(diff(Y(x), x))*(diff(h(x), x)+1) = 0;


> ibc := h(0) = 0, ((D(h))(10)+1)*s(10)^(-(1-1/n)*(1/2))*(1-(1-1/s(10))^(1-1/n))^2 = 0;

> p := dsolve({ibc, ode}, numeric);
Error, (in dsolve/numeric/bvp) cannot determine a suitable initial profile, please specify an approximate initial solution
>

I want to print the intersection of thie two circle but it shows

Error, (in plots:-display) expecting plot structure but received: `intersect`(CURVES([[1.000000000, 0.], [.9973715671, 0.4177774453e-1], [.9895277204, 0.8289662909e-1], [.9765921620, .1227081842], [.9587688933, .1605845580], [.9363389981, .1959284174], [.9096562091, .2281823686], [.8791413299, .2568377476], [.8452755984, .2814426418], [.8085930973, .3016090174], [.7696723313, .3170188388], [.7291271048, .3274290836], [.6875968398, .3326755761], [.6457364935, .3326755761], [.6042062285, .3274290835], [.5636610020, .3170188387], [.5247402363, .3016090175], [.4880577352, .2814426419], [.4541920036, .2568377477], [.4236771240, .2281823683], [.39...
How can i do for this problem to solve

At the moment, I am using

>writeto("Result1.txt");

> printf(StringTools[FormatTime]("%c\n"));
Thu Jul 31 14:28:08 2014

# lots of things here

# lots of things here

# lots of things here

>writeto(terminal);

To write a time and date stamp into my result1.txt file.

I understand that I can't write : into file names, but is there a way to writeto file using a more informative file name with date and time, such as,

Result_Thu Jul 31 14-28-08 2014.txt

Is that something can be easily formatted?

casper

Hi Maple friends.

Is there a Maple function to determine the intersection of two curves? For simple curves where the intersection is clear, I can plot them and use probeinfo to get the approximate intersection values.

But for more complex curves, where the scales are large, or the intersection point is not clear, it is difficult.

ie. intersection of y=x-3 and y=x^2-2*x-1

or intersection of y=x+1 and y=(x+1)/(x-1)

Thanks in advance.

Say sometimes, I need to copy and paste results from Maple output, either in 1D or 2D or self formatted (see this).

Sometimes, it works fine, with just a single ">" sign, like this

> v1:=[
eta[p2] = 0.260 ,
eta[p3] = 0.113 ,
eta[p4] = -0.013 ,
eta[p5] = 0.215 ,
eta[p6] = -0.189 ,
eta[phi2] = 0.020 ,
.......ect
]:

But sometimes, it looks like this:

> v1:=[
> eta[p2] = 0.260 ,
> eta[p3] = 0.113 ,
> eta[p4] = -0.013 ,
> eta[p5] = 0.215 ,
> eta[p6] = -0.189 ,
> eta[phi2] = 0.020 ,
> .......ect
> ]:

Below is a screenshot from what I get when I copy the above synatex into Maple :

Personally, when I type in multiple synatex, I tend to use shift+enter, to avoid the use of many ">"s.

It does not have any effect in practice, but is there a way to improve this? I dont like seeing many many ">"s.

Is it possible to determine using maple both the exponents x and y, if only the value of n is known in the formula 3^x/2^y=n?

Sorry. I forgot to add that n is more than 1 and less than 2. For example 1.002 090 314 041, 1. 977 205 095 and the like.

Lets take 3^359/2^569 = 1.001 066 461 508 586.  Suppose we do not know the exponents 359 and 569.  Is it possible somehow deduce them from n = 1.001 066 461 508 586?

Hi Maple friends.

expand( (a+b)^2 );

a^2+2*a*b+b^2

expand( (a+b)^3 );

a^3+3*a^2*b+3*a*b^2+b^3

expand( (a+4)^4 )

a^4+16*a^3+96*a^2+256*a+256 (???)

Pascal's triangle shows that 'expand( (a+4)^4 )' should have resulted in a^4+4*a^3*b+6*a^2*b^2+4*a*b^3+b^4

Where are the b variables in Maple's solution?

Thanks in advance.

hi , how can i solve this ?

4180*10^3*(diff(T(x, y), x))-60.5*(diff(T(x, y), y, y)) = 0

whith this boundary conditions 

diff(T(x, 0), y) = 100, diff(T(x, 0.25e-4), y) = 1000

thanks.

restart:

a:=0.0000000000000000000000213123123;

evalf[3](a);

I think the above is the same as if I were to change the precision tab, to display 3 decimals.

Is there a way to ask Maple to display it as  (printf(  "%3.3f",a);)

0.000

But I want this as a standard Maple ouput.

and I am not just working with a single scalar, I need something that works for a Vector, Matrix, and perhaps, in general.

Thanks,

casper

v1:=[
eta[p2] = 0.260 ,
eta[p3] = 0.113 ,
eta[p4] = -0.013 ,
eta[p5] = 0.215 ,
eta[p6] = -0.189 ,
eta[phi2] = 0.020 ,
eta[phi3] = 0.063 ,
eta[phi4] = -0.014 ,
eta[phi5] = -0.414 ,
eta[phi6] = 0.067 ,
mu[p] = 0.466 ,
mu[phi] = -0.169 ,
tau[p3] = -0.000 ,
tau[p4] = 0.000 ,
w[1] = 0.023 ,
w[2] = -0.447 ,
w[3] = -0.110 ,
w[4] = 0.035 ,
w[5] = 0.445
]:

for i to numelems(v1) do
    printf("%a = %3.3f , \n",lhs(v1[i]),rhs(v1[i]));
end do:

This runs and returns:

eta[p2] = 0.260 ,
eta[p3] = 0.113 ,
eta[p4] = -0.013 ,
eta[p5] = 0.215 ,
eta[p6] = -0.189 ,
eta[phi2] = 0.020 ,
eta[phi3] = 0.063 ,
eta[phi4] = -0.014 ,
eta[phi5] = -0.414 ,
eta[phi6] = 0.067 ,
mu[p] = 0.466 ,
mu[phi] = -0.169 ,
tau[p3] = 0.000 ,
tau[p4] = 0.000 ,
w[1] = 0.023 ,
w[2] = -0.447 ,
w[3] = -0.110 ,
w[4] = 0.035 ,
w[5] = 0.445 ,

Is there a way to align the qual signs? also to align the decials like this:

eta[p2]   =  0.260 ,
eta[p3]   =  0.113 ,
eta[p4]   = -0.013 ,
eta[p5]   =  0.215 ,
eta[p6]   = -0.189 ,
eta[phi2] =  0.020 ,
eta[phi3] =  0.063 ,
eta[phi4] = -0.014 ,
eta[phi5] = -0.414 ,
eta[phi6] =  0.067 ,
mu[p]     =  0.466 ,
mu[phi]   = -0.169 ,
tau[p3]   =   0.000 ,
tau[p4]   =   0.000 ,
w[1]       =   0.023 ,
w[2]       = -0.447 ,
w[3]       = -0.110 ,
w[4]       =  0.035 ,
w[5]       =  0.445 ,

For the negative numbers, I prefer to have 1 space of indentation.

Thanks,

casper

hi fellas
i have questions which maybe very common but i can't handle it right now
there are 9 matrices. each one of them is a 3*3 matrix, not to say all the matrices' elements are in symbolic form.
all i want is to form a matrix made out of the 9 matrices i mentioned above in **maple**; i mean something like "cell" in MatlabI'll be appreciated for your help

Download 1.mw

Hello,

I would like to open a modelica model with MapleSIM. When I do "import modelica", I received the error message : "import failed : no library found".

I believed the modelica library was already installed on maplesim but may be not. Do I need to install modelica library ? and if yes, how ?

More generally speaking, how can I do to open a modelica model on maplesim?

Thank you for your help.