Solve for f
f=\frac{\sin(\frac{2x+\pi }{2})}{x}
x\neq 0
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fx=\sin(x+\frac{\pi }{2})
Swap sides so that all variable terms are on the left hand side.
xf=\sin(x+\frac{\pi }{2})
The equation is in standard form.
\frac{xf}{x}=\frac{\sin(\frac{2x+\pi }{2})}{x}
Divide both sides by x.
f=\frac{\sin(\frac{2x+\pi }{2})}{x}
Dividing by x undoes the multiplication by x.
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