Mathematics for IGCSE & O level - Functions (Section 2 - No. 28)

For the function f(x) = 3x+2, what is f(h(x)) if h(x)= x-1?

3x+2

3x+1

3x-1

3x-5

Penjelasan

f(h(x)) = f(x-1) = 3(x-1)+2 = 3x-3+2 = 3x-1

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