Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
X tem E[X] = 4 and Var(X) = 9 . Calcule E[X^2 + 1]
X tem E[X] = 4 and Var(X) = 9 . Calcule E[X^2 + 1]
Natural Language
Math Input
Extended Keyboard