Let XXX have PDF f(x)=3x2f(x) = 3x^2f(x)=3x2 for 0≤x≤10 \le x \le 10≤x≤1. Find E[X2]E[X^2]E[X2].
0.50.50.5
0.60.60.6
0.750.750.75
0.80.80.8