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C=∫(0->1) f(x) dx
f(x) = 1/(1+x^2) + x^3.∫(0->1) f(x) dx
f(x) = 1/(1+x^2) + Cx^3
∫(0->1) f(x) dx
= ∫(0->1) [1/(1+x^2) + Cx^3] dx
= [ arctanx +(1/4)Cx^4]|(0->1)
= π/4 + (1/4)C
C =π/4 + (1/4)C
(3/4)C =π/4
C = π/3
ie
∫(0->1) f(x) dx = π/3
f(x) = 1/(1+x^2) + x^3.∫(0->1) f(x) dx
f(x) = 1/(1+x^2) + Cx^3
∫(0->1) f(x) dx
= ∫(0->1) [1/(1+x^2) + Cx^3] dx
= [ arctanx +(1/4)Cx^4]|(0->1)
= π/4 + (1/4)C
C =π/4 + (1/4)C
(3/4)C =π/4
C = π/3
ie
∫(0->1) f(x) dx = π/3
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