Quantum Mechanics- Wave Function

The states and are orthonormal. For what value of x are the states and given above orthogonal?

A. 10
B. 5
C. 0
D. −5
E. −10

(GR0177 #28)

Solution:

States are orthogonal when their dot-product (bra-ket) is 0.
orthonormal → .



Answer: E