Chapter 40, Problem 48E

(a)

To determine

$w_k$, the width of $B\left(k\right)$ where the function $B\left(k\right)$ has fallen to half its maximum value.

(b)

To determine

The integral that gives $\psi \left(x\right)$.

(c)

To determine

To determine:  $w_x$, the width of $\psi \left(x\right)$ where the function $\psi \left(x\right)$ has fallen to half its maximum value.

(d)

To determine

Product $w_p{w}_x$ and compare to the Heisenberg uncertainty principle.