JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Analyzing +4 | -1

Let

f:\left[ {4,\;\infty \left[ \to \right[4,\;\infty } \right[

be defined by

f\left( x \right) = {5^{x\left( {x - 4} \right)}}

then

{f^{ - 1}}\left( x \right)

View answer and explanation

Correct option: D

Not defined

The correct answer is Not defined because the function is not bijective over the given interval, as

f(4) = 1

which is not within the range

[4, \infty[

More Questions from FUNCTIONS

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f:(-\infty, 2] \longrightarrow(-\infty, 4]

f(x)=x(4-x)

f^{-1}(x)

g(f(x))=|\sin x|

f(g(x))=(\sin \sqrt{x})^2

f:\left( {2,\;3} \right) \to \left( {0,\;1} \right)

f\left( x \right) = x - \left[ x \right]

{f^{ - 1}}\left( x \right)

f: R \rightarrow R

f(x)=x^4

f(x)=(x+1)^2-1(x \geq-1)

S=\left\{x: f(x)=f^{-1}(x)\right\}