If f(x) = 2x + 1 find f-¹(x)?
- (x + 1) / 2
- 2x-1
- (x-1)/2
- None of these
Explanation
Let y = 2x + 1
Swap x and y
x = 2y + 1
Solve for y
x - 1 = 2y
y = (x - 1) / 2
f⁻¹(x) = (x - 1) / 2
Last verified on 04-05-2026
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