Mathematics for IGCSE & O level - Functions (Section 1 - No. 49) | ExamPlay

Mathematics for IGCSE & O level - Functions (Section 1 - No. 49)

What is f(g(x)) if f(x)=x-1 and g(x)=2x?

2x-1

2x+1

x-2

x/2-1

Paliwanag

Substitute g(x) for x in f(x) resulting in f(2x)=2x-1

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