Dear all
I would like to plot the behavior of solution for a second-order PDEs

plot_sol_pde.mw

Thanks

Hi

I have a sequence defined by recurrence. I would like to simplify the code so that I can compute all elements of my sequence.

sequence.mw

thanks

Dear all

I have a first-order complex ODE, I would like to use the polar coordinates to find the associated system of the ordinary differential equation then I determine the equilibrium point of the system and deduce that there is at least one limit cycle.

many thanks for your help

syestem_polar_cordinates.mw

Dear all

If we travel in straight lines in R^3. We begin at the point A=(1, 2, 3)
in the direction of the vector (1, 2, 2) and we end at the final point (10, 11, 12).

We made a single 90-degree turn.

Can we sketch a figure and we show the position where we take the turn?

Thanks

Dear all

I hope to solve a linear system AX=bk where A is a nxn matrix and X is a nx1 vector and b is a vector from the canonical basis of R^n ( for example in R^3 : b1=[ 1 0 0], b2 =[ 0 1 0] and b3=[ 0 0 1]

GramMat.mw

Thanks