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Let's say if given a expression y(x)=1/x+sinx, how to find the equation which y(x) satisfies by using Maple?

How can i trunc (find closest integer) each element in a matrix ? 

This is my matrix equation:

for n to 20 do 'CD'^n, 'F' = evalf(C[1].D[1]^n.F[1]) end do

And i want to show  "trunced" results

Hey

I have this spring setup:

spring setup

 

Now I wan't to analyse the motion of the springs, so i create this equations:

Hi!

 

Can anyone help me to write code that validates an answer to a equation of the sort a*x^2=cx.

There will be two solutions to the given equation and I don't know how to write it so it takes in and separates the two answers from the student and validates them.

 

Best

 

Mats

 

Hello!

Could you pleasу tell me, is it possible to make MapleSim not to simplify equation set of my model and solve equations without simplification? I want to do this because simplification process (reduction of equations number) takes too much time in comparison with integration process.

Thank you!

Hey

I'm trying to solve this trigonometric equation:

e := 4·cos(t)+2·cos(2·t)=0. In the interval 0..2·Pi

However when i try: 

solve([e, 0 <= t <= 2 Pi], t, AllSolutions, explicit)

I won't give my a straight answer.

I have also given Student:-Calculus1:-Roots a try:

Student:-Calculus1:-Roots(e, t=0..2·Pi)

But it will only give me an answer when i use the numeric...

 

Hi all,

 i have a problem with the equation generation in MapleSim, when using spring/damper elements in a Multibody-System. As an example, I've created a model of a mass-spring-damper system:

 

 


 

Hi,

I want to evaluate an approximation of the solution of the equation eq1 in [0,1] using 4 digits.

In first try, when I first write Digits:=4,  this seems avoid the command fsolve to display the solution.

In second try, when I write evalf(fsolve(eq1,beta=0..1),4),  evalf seems avoid the command fsolve to display the solution.

In the final try, when I write  
> fsolve(eq1,beta=0..1):
> evalf(%,4);
I have...

I put Celsius in my equation and I get the wrong answer even though I've loaded the Units Package:

Download 25-25not_work.mw

I have to put in the conversion to Kelvin by myself to get the right answer:

 

Download 25-25_works.mw 

What am I doing wrong?

Thanks ahead of time!

Edo

Algsubs question...

September 18 2011 treaders 5

Hello,

With reference to the attached screen grab, the Maple command "algsubs" seems unable to substitute equation (6) into equation (3). I was expecting a result where Iani was expressed in terms of kH and k. What am I doing wrong?

Regards,

Ben

 

Dear Kamel Boughrara

Hi

I am grateful for your attention to my problem.

I have not the special boundary condition for phi[2](r,theta) and phi[4](r,theta) at this stage of process of solution. In fact, these functions are auxiliary functions to decouple high-coupled another PDEs.

 You tried to explain the stages of solution.  I ask for you to perform (write all requisite commands...

 

Dear my friends

Hi

I have a linear partial differential equation to solve.

> equ1:=F5*(diff(phi[2](r, theta), r, r)+(diff(phi[2](r, theta), r))/r+(diff(phi[2](r, theta), theta, theta))/r^2)+F3*phi[4](r,theta) = 0;

where F5 and F3 is constant and phi[2](r,theta) is unknown function.

I tried to solve this equation by the following Maple's command:

> pdsolve(equ1,phi[2](r,theta));

Hello all-

I have a system of equations, something like:

X1+X2+X3=1

and then I have seperate equations such as:

X3=T*X1^2*exp(.12/T) and so on

I'd like to make a plot of X1,X2,X3 as a function of T.  How can I do this?

Thank you for your time!

I have a equation which I want to solve with HPM method, it works this way that you put a series instead of the dependent variable, and make infinite linear differential equation out of your nonlinear, then after solving some of them that meet your accuracy and sum them, that makes the answer. Now I have many problems with this which I hope you may help me.

1. How can I programatically asssign result of a dsolve to the variable? for example when I have dsolve(diff(f(x...

Good afternoon

i have problem when i am using components.

i want to solve a determinant equation and show in MathContainer4

 

thank you for your help

ejemplo_09-08-201.mw

 

 

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