Evaluate the Integral x^2 sqrt(x^3 + 1) dx with u substitution u = x^3 + 1

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100 積分 (世界記録?)

Evaluate definite integral (x^2 sqrt(x^3 +1)) dx over [0, 2] using method of substitution

∫1/√(x² + x) dx = ? Solve without using substitution method.

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