What is the integral from 8 to 3 of 1 ?

The integral from 8 to 3 of 1 is -5

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integral from 8 to 3 of 1

\int_{8}^{3} 1 d x

- 5

Solution steps

\int_{8}^{3} 1 d x

\int_{a}^{b} f (x) d x = - \int_{b}^{a} f (x) d x, a < b

= - \int_{3}^{8} 1 d x

Integral of a constant:

\int a d x = a x

= - [1 \cdot x]_{3}^{8}

Simplify

= - [x]_{3}^{8}

Compute the boundaries:

5

= - 5

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