JEE Main 2019 — Math solution | Fundamenthol

JEE Main2019Math

Q.

Let f and g be continuous functions on [0, a] such that f(x) = f(a – x) and g(x) + g(a – x) = 4, then $0 \int a f (x) g (x) d x$ is :

A
$0 \int a f (x) d x$
B
$4 0 \int a f (x) d x$
C
$- 3 0 \int a f (x) d x$
D
$2 0 \int a f (x) d x$

Solution

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