What is the integral of 12xln(7x) ?

The integral of 12xln(7x) is 12(1/2 x^2ln(7x)-(x^2)/4)+C

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integral of 12xln(7x)

\int 12 x ln (7 x) d x

12 (\frac{1}{2} x^{2} ln (7 x) - \frac{x ^{2}}{4}) + C

Solution steps

\int 12 x ln (7 x) d x

Take the constant out:

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

= 12 \cdot \int x ln (7 x) d x

Apply Integration By Parts

: \frac{1}{2} x^{2} ln (7 x) - \int \frac{x}{2} d x

= 12 (\frac{1}{2} x^{2} ln (7 x) - \int \frac{x}{2} d x)

\int \frac{x}{2} d x = \frac{x ^{2}}{4}

= 12 (\frac{1}{2} x^{2} ln (7 x) - \frac{x ^{2}}{4})

Add a constant to the solution

= 12 (\frac{1}{2} x^{2} ln (7 x) - \frac{x ^{2}}{4}) + C

\frac{d}{d x} ((a^{2} + x^{2}) e^{- x^{2} - a^{2}})

\frac{d}{d x} (- 4 cos^{3} (x))

y = x^{2} - 2

x \to 3 lim (4)

15 x - 0.4 x^{2} - 80

What is the integral of 12xln(7x) ?
The integral of 12xln(7x) is 12(1/2 x^2ln(7x)-(x^2)/4)+C