Calculus Examples

$\int x \cos (x) d x$

Step 1

$\int x \cos (x) d x$ is an antiderivative of $x \cos (x)$ , so by definition $\frac{d}{d x} [\int x \cos (x) d x]$ is $x \cos (x)$ .

$x \cos (x)$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$