Year 11 maths · F.2 · Functions
Find a value of an inverse function
Find the x that gives the value c.
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f(x) = 6x + 2. Find f⁻¹(2).
Answer: 0
f(x) = x + 9. Find f⁻¹(1).
Answer: -8
f(x) = x. Find f⁻¹(−5).
Answer: -5
Tip: Find the x that gives the value c.
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