(b) A particle confined to the interval 0 < x < L by an infinite square well has the wavefunction (x) shown in the figure. (x)m L/2 X L This wave function can be expressed by the expansion v(x) = [Cn On (x), n=1 where on (2)= sin(172/L) are the usual eigenfunctions of the infinite square well. Without computing the coefficients Cn, state which of C, C2, C3, and c are zero. Which has the largest magnitude? Which are positive and which are negative? Give reasons for your answers. [4 marks]