a ∫ x Sqr(a^2-x^2) DX 0 3 ∫ Sqr(t-1) (2t+7) Dt 2

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a ∫ x Sqr(a^2-x^2) DX 0 3 ∫ Sqr(t-1) (2t+7) Dt 2

This is a trig question.

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