Definite IntegrationHard
Question
Let f(x) = 
, then 
f(x)f
dx =
, then f(x)fdx =Options
A.
f(x) dx
f(x) dxB.f(x) dx
f(x) dxC.πf(x) dx
f(x) dxD.
f(x) dx
f(x) dxSolution
I = 
dx
πI =
dx
=
dx
=
dx = 4 
dx
dt [Put 2x = t]
I =
dx
dxπI =
dx=
dx=
dx = 4 dxdt [Put 2x = t]I =
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