Question

Q28, question linked in the img below

Answer 1

Given that : f : [ -π/2, π/2 ] –> [-1,1]

As we know that : π = 180° => π/2 = 90°

Also, sin π/2 = 1, and

sin(-x) = -sinx

=> sin(-π/2) = -sin π/2 = -1

So, when the function will be f(x) = sinx

then, f(-π/2,π/2) –> (-1,1)

So, option (c) f(x) = sinx is correct ✔️

Fóllòw MË to know more about mathematical issues ☺️

@ItsChampion ✌️