Let be defined by

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

Let

f:(e,\infty)\to\mathbb{R}

be defined by

f(x)=\ln(\ln(\ln x))

. Then: (a)

f

is one-one but not onto (b)

f

is onto but not one-one (c)

f

is one-one and onto (d)

f

is neither one-one nor onto