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Question
Check if the following function has an inverse function. If yes, find the inverse function.
f(x) = 8
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Solution
f(x) = 8
∵ f(2) = f(– 2) = 8
∴ f(2) = f(– 2) but 2 ≠ – 2
∴ f is not one-one
∴ f–1 does not exist.
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