here's a problem from my assignment
let integral p(x)dx=Ae^-(x/a) dx...........(1)
find value of A, that makes integral p(x)dx=1;
find mean x so that integral x*p(x)dx=a.........2)
to solve the first one i found out A to be (-1/a*e^(x/a))
but when i am integrating the two i can not find that value 1........plz tell me if my value of A is ok or not........
and for the second problem how can i integrate those three components all together?
what is the formula, plz notify here......
thanks in advance
The Attempt at a Solution
A to be (-1/a*e^(x/a))