Question

Find the range of the following functions given by

(i) f(x) = 3/(2 - x2)

(ii) f(x) = 1 – |x −2|

(iii) f (x) = |x −3|

(iv) f (x) = 1 + 3 cos2x

Answer 1

(i) We have, f(x) = 3/(2 - x2) = y(let)