FunctionHard

Question

Let f : (4, 6) → (6,8) be a function defined by f(x) = x + . (where [.] denotes the greatest integer function) , then f-1 (x) is euqal to :-

Options

A.x -
B.- x - 2
C.x - 2
D.

Solution

∈ (2,3) ⇒ = 2
f(x) = x + 2
y - 2 = x
f - 1(x) = x - 2

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