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in Relations and Functions by (48.0k points)

From  [-π/2, -π/2] which of the following is one-one onto function defined in R

(A) f(x) = tan x

(B) f(x) = sin x

(C) f(x) = cos x

(D) f(x) = ex + e-x

1 Answer

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Best answer

Answer is (A)

Where f : x [- π/2, - π/2] → R

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