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V =
1
∫ π (2x^2 +1)^2 dx
0
.
1
∫ π((4x^4 + 4x^2 + 1)
0
.
= π (4/5 x^5 + 4/3 x^3 + x)|1..0|
= π (4/5 + 4/3 +1) = 47/15 π