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

The integral from 1 to 2 of (1) is 1

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integral from 1 to 2 of (1)

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

1

Solution steps

\int_{1}^{2} 1 d x

Integral of a constant:

\int a d x = a x

= [1 \cdot x]_{1}^{2}

Simplify

= [x]_{1}^{2}

Compute the boundaries:

1

= 1

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

\int_{0}^{1} \frac{1}{x - 1} d x

\int_{1}^{5} \frac{5}{x ^{2}} d x