Symbolic integration function plot

Hi,

I have a problem.

I have two functions

H(t,m) = -(0.8e-3.*m./(-0.1e-1-0.7e-1.*exp(-2.*t))-0.112e-3.*m.*t.*exp(-.2.*t)./(-0.1e-1-0.7e-1.*exp(-2.*t)).^2).*exp(0.8e-3.*m.*t./(-0.1e-1-0.7e-1.*exp(-2.*t)))

and I have mfile for H.

now I have another function in which I have integral from H with respect to t from 0 to x).

F(x,y) = int(H(t,y),t,0,x);

how can I possibly plot this function F.

Thanks in advanced.

Answer 1

[Walter Roberson]

You cannot do numeric integration if you have an undefined variable.

You can do symbolic integration. Are x and y being passed in? If they are then

function r = F(x, y)
  syms t
  r = int( H(t,y), t, 0, x);
end

Answer 2

[Lukas]

First of all thanks for the answer. I tried yours solution but it will not return explicit solution and I can't plot. I'm really new at this.

[Walter Roberson]

Not every function has an explicit integral.

Answer 3

[Lukas]

Oh I got thanks anyway I used the integral function