What is the integral of (cos(x)+x) ?

The integral of (cos(x)+x) is sin(x)+(x^2)/2+C

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integral of (cos(x)+x)

\int (cos (x) + x) d x

sin (x) + \frac{x ^{2}}{2} + C

Solution steps

\int cos (x) + x d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int cos (x) d x + \int x d x

\int cos (x) d x = sin (x)

\int x d x = \frac{x ^{2}}{2}

= sin (x) + \frac{x ^{2}}{2}

Add a constant to the solution

= sin (x) + \frac{x ^{2}}{2} + C

\int \frac{1 + x ^{2}}{x ^{4}} d x

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\int (x^{2} - \frac{1}{x ^{2}})^{3} x d x

What is the integral of (cos(x)+x) ?
The integral of (cos(x)+x) is sin(x)+(x^2)/2+C