- #1
hhhmortal
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- 0
Homework Statement
This is really a maths problem I'm having.
I need to get the general solution for the infinite square well in the form:
u = A cos(kx) + B sin(kx)
I found the general solution to be:
u = A exp(ikx) + B exp(-ikx)
Using Euler's formula:
exp(ikx) = cos(kx) + isin (kx)
exp(-ikx) = cos(kx) - isin(kx)
Hence, general solution becomes :
u = A cos(kx) + Bcos(kx)
What am I missing out?