JEE MATHEMATICS MCQ: FUNCTIONS

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Application +4 | -1

g(x)=x^{2}+x-1

and

(g \circ f)(x)=4 x^{2}-10 x+5

, then

f\left(\frac{5}{4}\right)

is equal to:

View answer and explanation

Correct option: B

-\frac{1}{2}

Option B (

-\frac{1}{2}

) is correct because it is the solution to the quadratic equation obtained by substituting the given value into the composite function.

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