Consider the differential equation d2f(x)/dx2 = bf(x). (a) Suppose that f1(x) and f2(x) ar...

Consider the differential equation d2f(x)/dx2 = bf(x). (a) Suppose that f1(x) and f2(x) are solutions. That is,

Show that the equation also holds when the linear combination A1f1(x) + A2f2(x) is inserted, (b) Suppose that f3(x) and f4(x) are solutions of d2f(x)/dx2 = bf2(x). Is A3f3(x) + A4f4(x) a solution? Justify your answer

Exercises 90-92 refer to a particle described by the wave function