Hi

Do the following equation solve by method of line(MOL) with this software?

du/dt=0.01 d^2u/dx^2

conditions:

u(x,0)=10

u(0,t)=0

u(1,t)=0

t=1,delta t=0.1,x=1,Nx=10

thank you

Hi

I have this diagram

Sys := -(diff(p(z), z)) = 1.289*10^10*(.675+77/(Pi*1.2^2))*(1+x(z))/(Pi*1.2^2*p(z)), diff(x(z), z) = 1.134*10^(-8)*Pi*1.2^2*(1-x(z))*p(z)/(1+x(z)); Inc := p(0) = 2*10^6, x(0) = 0; Sol := dsolve({Inc, Sys}, numeric); plots[odeplot](Sol, [[z, p(z)], [z, x(z)]], z = 0 .. 26, color = [red, blue], thickness = 2)

according to the diagram data,I should be plotted another diagram in terms of P vers w.

that

w = 1560*Pi*(9*z-(1/3)*(z-2.7)^3*((1/3)*2.7^3)).

Hi

I want to plot this equation to obtain 5 curves, then the maximum point  of eath curves link together.

But I can not plot this equation;anybody can help me?

restart; Eq := x-(r+3.1*10^7*exp(-11616/(1.98*T)))/(3.1*10^7*exp(-11616/(1.98*T))+1.8*10^18*exp(-29691/(1.98*T))) = 0; R := [0, 0.1e-2, 0.1e-1, .1, 1.6]; plots[implicitplot]([seq(eval(Eq, r = R[i]), i = 1 .. nops(R))], T = 0 .. 500, x = 0 .. 2, color = [red, blue, green, yellow, black], gridrefine = 5)

Hi

I have problem to plot(2D)  some equations that have 3 variables (to obtain one diagram with some curve ).

like this equation

ln(2*s*t+2*s*x*sqrt(t)/sqrt(pi)+x^2)-2*s*(arctan((s+x*sqrt(pi/t))/sqrt(2*pi*s-s^2))-(1/2)*pi)/sqrt(2*pi*s-s^2) = 0

I should plot x v.s t for s=0.01,0.005,0.003,0.002

please  help me to understand how can plot like these equation.

thanks

what should I do with this error:

"the specified procedure could not be found"

"the Kernel loader cannot find maple engine library,maple.........."

This error appears at the beginning of  use !