정적분 및 가적분 계산기

이 계산기는 단계별 풀이를 보여 주면서 상한과 하한이 있는 정적분(진정적분 포함)을 계산하려고 시도합니다.

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Solution

Your input: calculate $$$\int_{-3}^{1}\left( - \frac{3 x^{2}}{4} \right)dx$$$

First, calculate the corresponding indefinite integral: $$$\int{\left(- \frac{3 x^{2}}{4}\right)d x}=- \frac{x^{3}}{4}$$$ (for steps, see indefinite integral calculator)

According to the Fundamental Theorem of Calculus, $$$\int_a^b F(x) dx=f(b)-f(a)$$$, so just evaluate the integral at the endpoints, and that's the answer.

$$$\left(- \frac{x^{3}}{4}\right)|_{\left(x=1\right)}=- \frac{1}{4}$$$

$$$\left(- \frac{x^{3}}{4}\right)|_{\left(x=-3\right)}=\frac{27}{4}$$$

$$$\int_{-3}^{1}\left( - \frac{3 x^{2}}{4} \right)dx=\left(- \frac{x^{3}}{4}\right)|_{\left(x=1\right)}-\left(- \frac{x^{3}}{4}\right)|_{\left(x=-3\right)}=-7$$$

Answer: $$$\int_{-3}^{1}\left( - \frac{3 x^{2}}{4} \right)dx=-7$$$

정적분 및 가적분 계산기

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Solution