I have 2 questions that I can solve by hand, but I need to show how to solve using maple.

1. Solve for y: dy/dx = -y/x ; y(1)=-1

2. Indicate at each of the twenty-five points specified on the graph frame to the right (this is just a x=-2..2 and y=-2..2 graph with a 25 point grid) what the slope of the solution curve to y'=y is at that point.  Sketch the curve for the initial condition y(0)=0. The indicated points are at the (x,y) points from...

Is it too much to expect Maple 13 to do some basic simplification that a 8th grader student could do to clean up some of the wacky expressions it outputs?  In the above, why could it not divide by "C" straight away?  And why does it leave a minus sign hanging outside the expression?  A little more development programming effort devoted...

Hi, Could some body help me here, Am trying to use dsolve to solve the following system of equations but I am getting the following error

difS := diff(w(t), t) = nu+delta*z(t)-(1/100)*psi*w(t)*(x(t)+epsilon*y(t))-mu*w(t);

difI := diff(x(t), t) = (1/100)*(1-rho)*psi*w*(x(t)+epsilon*y(t))+PI*y(t)-h[1]*x(t);

difC := diff(y(t), t) = (1/100)*rho*psi*w*(x(t)+epsilon*y(t))+(1-q)*eta*x(t)-h[2]*y(t);

difR := diff(z(t), t) = q*eta*x(t)+beta*y(t)-(mu+delta)*z(t)

What is the maplet in maple ? What does it help me?

What is the maple sim ? where I can download it ?

Hello,

I'm trying to fit a double-diode equation using Maple.  I can get an analytic form of the fitting function in my two variables V and J of the form V(J), but I want J(V), so I'm using fsolve to extract this.  I'm then trying to fit the resulting function to a set of experimental data, but I'm getting an error about writing to an rtable.  I've tested the function, and it gives me a numeric value if I give it numeric inputs.  Is there a way I can fit it?  Code is below:

Dear everyone,

  Hello,  I have a question about obtaining the power of a variable. Suppose

f:=x^5;

g:=degree(f,x);

I got 5.

now let f:=x^n;

g:=degree(f,x)

I got FAIL :(  I tried g:=log[x](f), it doesn't go to "n" either.

Is there anyway I can simply get the "n" in x^n? I know "n" is an integer, but how to refine into integer type?

Thank you very much in advance

Does anyone know how to include Greek characters in a Maple plot?  I am not talking about axis labels or plot titles.  I would like to be able to include any characters I want, including Greek, anywhere I want.  I have Maple 15.

Greg Spradlin

Embry-Riddle Aeronautical University

Hi there.

Is it possible to get Maple to factorise polynomiums like for instance the one given in the Maple sheet I've attached? The idea is to get both the nominator and denominator factorised, making it easy to read poles and zeros for an electrical circuit.

Thank you.

I would like to show a single plot comparing the 2nd, 3rd, and 4th degree Taylor polynomials of y=sqrt(2x+1) centered at x=4, with each polynomial having a different color. By default, Maple produces the plot with the function in red and all polynomials in blue. I can easily do this using the plot command, but I'd like to know if there is an option in the TaylorApproximation command that would achieve the same end result.

Thanks!

Hi all,

I am trying to add the two expressions in MAPLE 15, but it returns exactly the same expression back, is there any way I can add these two expressions?

Please find the attached file

mapleprimes.mw

Thanks in advance

A.Q

Soton

I am trying to solve a tricky system of diff eq....can somebody point me in the right direction, the error message is involved with the initial conditions..

how do i add more buttons into my maplets

I have 2 column vectors I am trying to plot against each other. The vertical axis needs to be logarithmic.

If I say

plot(mass,map(log,pressure),style=point);

it works and I get all 19 points.

If I say

logplot(mass,pressure);

I get the correct scales in both directions (so nothing would be cut-off) but it plots only 4 points.The same happens if I use plot(...,axis[2]=[mode=log]);

The pressure values range from 1E-7 to 1E-12....

how do i write this procedure in maplet. 

Hello, 

I am trying to solve a simple equation 

x(0.0178){tan([2.10^-5](x)^0.5)}^2=+2.32.10^12-x, which I want to be solved over the range 1.10^10......2.10^12.

I have tried the following program (which I have got help on):

restart; 

eq := x(0.0178)*tan²(Sqrt(x)*2E-5) = 2.32e12-x;