🎓 CLEP Exam Prep

Find the inverse function of f(x) = (x + 1) / (x - 2).

A f⁻¹(x) = (2x + 1) / (x - 1)
B f⁻¹(x) = (x + 2) / (x - 1)
C f⁻¹(x) = (2x - 1) / (x + 1)
D f⁻¹(x) = (x - 2) / (x + 1)

✓ Correct Answer: Option A

Let y = (x+1)/(x-2). Swap x and y: x = (y+1)/(y-2). Multiply by (y-2): x(y-2) = y+1. Distribute: xy - 2x = y + 1. Get y terms on one side: xy - y = 2x + 1. Factor out y: y(x - 1) = 2x + 1. Solve for y: y = (2x + 1) / (x - 1).

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