Recent content by ken15ken15

By definition,Ia=(S/3V)* I want to know if there is power factor, say cosϕ=0.8 Should Ia=(S/(3V*0.8)) or just Ia =(S/3V)*? Because in the reference book, it sometimes consider the power factor but sometimes don't, I am quite confused with it.

So do you mean given the random variables are independent, the sum or difference of them will also have the same distribution of them? Also, how can a duel with the square of the random variables? Do I need to consider it with transformation of variables?

sorry but...what property is it? I haven't learned this before...

Homework Statement Homework Equations Y=1/2*(X1-X3)^2+1/14*(X2+2X4-3X5)^2The Attempt at a Solution For (a) part, I have only learned to find the moment-generating function of Y, but not finding the p.d.f. Moreover, the examples I have seen only involves random variables Xi to the power 1, but...