5. Determine the expectation of the random variable whose density function is given in problem 2. 6. Determine the variance of the random variable whose density function is given in problem 2. 2. Let X be a continuous random variable with probability density function f(x) = 1 π[1 + (x − 1)2] - for-co< x < ∞o. Find the cumulative distribution function.

I need help with this problem and an explanation of the solution for the image described below. (Statistics: Engineering Probabilities)