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Answers for “为什么结果以根式形式表示?”

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To evaluate ∫23xdx\int_2^3 \sqrt{x} dx, first find the antiderivative 23x3/2\frac{2}{3}x^{3/2}. Then, apply the Fundamental Theorem of Calculus by subtracting the value of the antiderivative at the lower bound from its value at the upper bound: [23x3/2]23=23(3)3/2−23(2)3/2\left[\frac{2}{3}x^{3/2}\right]_2^3 = \frac{2}{3}(3)^{3/2} - \frac{2}{3}(2)^{3/2}.

Conditions: The integral is ∫23xdx\int_2^3 \sqrt{x} dx.; The antiderivative is 23x3/2\frac{2}{3}x^{3/2}.; The bounds are 2 and 3.