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Mathematics for IGCSE & O level - Functions (Section 1 - No. 4)

If f(x) = 2x + 1, what expression represents f(x+h)?
2x + 1 + h
2x + 2h + 1
2x + h + 1
2x + 1

Forklaring

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

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