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Gresty Academy Paper 1 · Q9

Paper 1TrigonometryAlgebra

If

f(x)=sin⁡2(Ax)f(x)=\sin^2(Ax)

satisfies the functional equation

f(x)=f(x+2)f(x)=f(x+2)

then the minimum positive value of AA is

A00
B11
Cπ2\frac\pi2
D22
Eπ\pi

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