dear all

I try to create a table with four columns but someting wrong, the code contains few lines, 

table_columns.mw

Thank you for your help 

dear all

I have a system of 4 equations with 4 unkowns, but maple says that there 7 unknowns, and fsolve does return any solution

problem_solve_system.mw

Thanks

Dear all

I tried to solve a second order ODE, using dsolve but maple doest not return an explicit solution and no solution plotted. 

solve_ode.mw

thank you for your help 

Dear all

I tried to redo the same steps as presented in 
https://www.youtube.com/watch?v=l4Y3iQrPBa8
using Maple 

BUT, I  have an error, 

                               Error, (in assembly) bad index into Vector
I hope find the error in maple code

code1.mw

thank you 

Dear all

I just write a code, everything is well written, but using 

M := Multiply(y11, Transpose(s)) 

I get a table and not a matrix,  PLEASE see equation 19 and 20

probem_multiply.mw

Thank you for your help 

Dear all

I have a nonlinear system of algebraic equations, I would like to solve it  without using fsolve and Newton's method. 
Maybe one can use, fixed point method or Broyden's method

Fixed_Broyden_method.mw

Can we solve the system of 4 equations, using the proposed methods

thank you 

Dear all

I tried to use the command Secant to solve a nonlinear system of equations, In the following, example of two simple equations, how can I use Secant to solve the problem

secant_for_system.mw

Thank you 

Dear all

I have  a funciton f(x,y) 
I compute the critical point, maple gives me three different points, denoted in the code tmin 

from these points how can I fix one  one of them that  give me the min( f(x)) 

code.mw

thank you for any help

Dear all

I have a power series, the genral term contains sign(sin(n)), 
everything is well defined, but when I apply summation to the general term, i can not see sign(sin(n)), its dropped.. why 

and how deduce the the limit to get the radius of convergence 

Cauchy_criteria.mw

thank you for any help 

Dear all

I  compute the radius of convergence of power series using maple, 

but the code does not give any result

radius_convergence_PSeries.mw

thank you for any help 

I have a routine which returns a certain result. In the simplest case the result should be p[[1]].

The result is indeed p[[1]]. However, when I ask whether the result is equal to p[[1]], Maple says false.

Why does is not recognize these two things as being equal?

Dear all

` The aim of this code: to construct a non-abelian group of  odd order

such that the product of its elements not necessary identity element. 

symmetric_group.mw

But, the code doesn't display the elements. 

Thank you

This was very surprising!!

x:=3;
                               3
g:=x;h:=x^2;
                               3
                               9
subs(x=4,g);subs(x=4,h);
                               4
                               9

This is inconsistent! After g and h have been assigned values, they do not depend on x anymore, so g should not be turned into 4 by subs

Dear all

I have a box contains 3 red balls and 3 white balls, we select one ball three times and we define Z to be  the number of red balls selected. 
Since, we selected three times a ball and we count the number of red balls selcted after this experiment, we have 
Z(Omega)={0,1,2,3}

Now, How CAN I determine the sigma algebra generated by Z ( which is a random variable). 
The following code  calculate the sigma algebra generated by any subset  A subset of global set X , 
I would like to use it, to verify the descripted experiment in probability. 

sigma_algebra_random_variable.mw

thank you 

Dear all

I have a continuous piecewise function, but I can't evaluate its integral 

Integral.mw

thank you for your help