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If the function f : R → R be such that f(x) = x − [x], where [x] denotes the greatest integer less than or equal to x, then f⁻¹(x) is
Let f : N → Y be a function defined as f(x) = 4x + 3, where, Y = {y ∈ N: y = 4x + 3 for some x ∈ N}. Show that f is invertible. Find the inverse.
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