What is the integral of 8xcos(x) ?

The integral of 8xcos(x) is 8(xsin(x)+cos(x))+C

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integral of 8xcos(x)

\int 8 x cos (x) d x

8 (x sin (x) + cos (x)) + C

Solution steps

\int 8 x cos (x) d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 8 \cdot \int x cos (x) d x

Apply Integration By Parts

: x sin (x) - \int sin (x) d x

= 8 (x sin (x) - \int sin (x) d x)

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

= 8 (x sin (x) - (- cos (x)))

Simplify

= 8 (x sin (x) + cos (x))

Add a constant to the solution

= 8 (x sin (x) + cos (x)) + C

\int \frac{3 x + 2}{x ^{2} - 11} d x

x \to 0 lim (\frac{sin ( 3 x )}{x})

\int x^{2} + 14 x d x

y = 2 x^{3} - 3 x^{2}

y^{^{''}} + 2 y = 0, y (0) = 1, y (1) = 0

What is the integral of 8xcos(x) ?
The integral of 8xcos(x) is 8(xsin(x)+cos(x))+C