Graphing and finding solutions using Euler's iterative method

I am looking to learn how to use Euler's iterative method in MATLAB. I am having trouble using it. I am working on two problems right now, and these problems require me to do specific programming. Any help you can offer would be greatly appreciated.

Biologists stocked a lake with 400 fish of one species and estimated the species' carrying capacity in the lake to be 10,000. The number of fish tripled in the first year. Assume that the size of the fish population satisfies the logistic equation.

1) Use your program to find a numerical solution to the problem for time up to 2 years, using step siz h = 0.05. Plot the exact solution and the numerical solution corresponding to step size h = 0.05 in the same frame.

This problem wants me to use the logistic equation.