Hi--
If I have:
x,f=symbols('x,f',real=True)
exp1=E**(-I*2*pi*f*x)
exp2=exp1.expand(complex=True)
exp2 returns:
-I*sin(2*pi*f*x) + cos(2*pi*f*x)
Is there a way to go from exp2 back to exp1?
Thanks--
Greg
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