Okay, so if f(x) = cos2x and g(x) = x^2 - 3.

What would these be?

a) f(g(x))

b) g(f(x))

c) f(f(x))

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- Aug 19th 2009, 12:06 PMCoolmanNeed Help
Okay, so if f(x) = cos2x and g(x) = x^2 - 3.

What would these be?

a) f(g(x))

b) g(f(x))

c) f(f(x)) - Aug 19th 2009, 12:18 PMenjam
a) f(g(x)) = cos(2(x^2 - 3))

b) g(f(x)) = cos^2(2x) - 3

Not 100% sure on this one but, I think it'd be

cos2(cos(2x))