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JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

If

f: \mathbf{R} \rightarrow \mathbf{R}

defined by

f(x)=x^4+2

then the value of

f^{-1}(83)

and

f^{-1}(-2)

respectively are

View answer and explanation

Correct option: B

\{3,-3\}, \phi

Option B (

\left\{3,-3\right\}, \phi

) is correct because

f^{-1}(83)

yields

\pm 3

, and

f^{-1}(-2)

is undefined in real numbers.

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\}