JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

The function

f

satisfies the functional equation

3f\left( x \right) + 2f\left( {\frac{{x + 59}}{{x - 1}}} \right) = 10x + 30

for all real

x \ne 1

. The value of

f\left( 7 \right)

View answer and explanation

Correct option: B

Option B (4) is correct because it is the value obtained by solving the functional equation for f(x) and then substituting x = 7.

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\}