1. Cumulative Distribution

Sorry if this is not considered advanced but this is a question for a College level course I have been having trouble with.

I am trying to find an expression for a cumulative distribution of X in this equation.

f(x)=(1/64)x^3
0<x<4

Thanks very much for any help!

2. Hello,

Just find $\int_0^t f(x) ~dx$ for $t\in(0,4)$. This will be the cumulative density function.
(and the cdf is 0 if t<0, 1 if t>4)