If f(x) =2x and g(x) = cos(x) then g(f(π/2)) = ?
Number 2 in picture
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Answer:
(4) -1.
Step-by-step explanation:
First evaluate f(π/2) which is 2 * π/2 = π.
So g(f(π/2)) = g(π)
= cos π
= -1.