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JEE MATHEMATICS MCQ: FUNCTIONS

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Application +4 | -1

If

\mathrm{f}: \mathrm{R} \rightarrow \mathrm{R}, \mathrm{g}: \mathrm{R} \rightarrow \mathrm{R}

are defined by

\mathrm{f}(\mathrm{x})=5 \mathrm{x}-3, \mathrm{~g}(\mathrm{x})=x^2+3

, then

\left(\mathrm{go} f^{-1}\right)(3)=

View answer and explanation

Correct option: B

\frac{111}{25}

Option B (

\frac{111}{25}

) is correct because it is the result of evaluating

g(f^{-1}(3))

after finding the inverse of f(x).

More Questions from FUNCTIONS

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

f(x)=x(4-x)

f^{-1}(x)

is given by: If

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

, Choose the correct answer. Which of the following functions are odd functions Let

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

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