calculus

q48 ans c

@NishantThakre
Can you tell what is the upper limit of integration of f(t)

@AshishSingh
it is x


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@MohdsabirShaikh @AshishSingh
i cannot understand the part
f(2nt)=f(t)
in 2nd last line

@NishantThakre f is odd function with period 2
So f(2nt)=f(t)
Since its odd
F(t)=F(t)