The Expectations Value of a Function F(x)of X When the Wave

Multiple Choice

The expectations value of a function f(x) of x when the wave function depends only on x is given by < f(x) > =

A) $\int _ { - \infty } ^ { + \infty } \sqrt { f ( x ) } \psi ( x ) d x$ .
B) $\int _ { - \infty } ^ { + \infty } f ( x ) \psi ( x ) d x$ .
C) $\int _ { - \infty } ^ { + \infty } f ( x ) \psi ^ { * } ( x ) d x$ .
D) $\int _ { - \infty } ^ { + \infty } \psi ^ { * } ( x ) f ( x ) \psi ( x ) d x$ .
E) $\int _ { - \infty } ^ { + \infty } \psi ^ { * } ( x ) \frac { f ^ { 2 } ( x ) } { 2 } \psi ( x ) d x$ .