What is the integral from 1 to 2 of ln(x^2) ?

The integral from 1 to 2 of ln(x^2) is 4ln(2)-2

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integral from 1 to 2 of ln(x^2)

\int_{1}^{2} ln (x^{2}) d x

4 ln (2) - 2

Decimal

0.77258 \dots

Solution steps

\int_{1}^{2} ln (x^{2}) d x

Apply Integration By Parts

= [x ln (x^{2}) - \int 2 d x]_{1}^{2}

\int 2 d x = 2 x

= [x ln (x^{2}) - 2 x]_{1}^{2}

Apply log rule

lo g_{a} (x^{b}) = b \cdot lo g_{a} (x),

assuming

x \geq 0

= [2 x ln (x) - 2 x]_{1}^{2}

Compute the boundaries:

4 ln (2) - 2

= 4 ln (2) - 2

What is the integral from 1 to 2 of ln(x^2) ?
The integral from 1 to 2 of ln(x^2) is 4ln(2)-2