Calculatrice d’intégrales définies et impropres

Calculez des intégrales définies et impropres étape par étape

La calculatrice essaiera d'évaluer l'intégrale définie (c.-à-d. avec bornes), y compris les intégrales impropres, en affichant les étapes.

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Integrate with respect to:

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If you need `-oo`, type -inf.

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If you need `oo`, type inf.

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Solution

Your input: calculate $$$\int_{-3}^{3}\left( \frac{x^{3}}{18} \right)dx$$$

First, calculate the corresponding indefinite integral: $$$\int{\frac{x^{3}}{18} d x}=\frac{x^{4}}{72}$$$ (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.

$$$\left(\frac{x^{4}}{72}\right)|_{\left(x=3\right)}=\frac{9}{8}$$$

$$$\left(\frac{x^{4}}{72}\right)|_{\left(x=-3\right)}=\frac{9}{8}$$$

$$$\int_{-3}^{3}\left( \frac{x^{3}}{18} \right)dx=\left(\frac{x^{4}}{72}\right)|_{\left(x=3\right)}-\left(\frac{x^{4}}{72}\right)|_{\left(x=-3\right)}=0$$$

Answer: $$$\int_{-3}^{3}\left( \frac{x^{3}}{18} \right)dx=0$$$


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