What is the integral from x to 3 of 1 ?

The integral from x to 3 of 1 is 3-x

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integral from x to 3 of 1

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

3 - x

Solution steps

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

Integral of a constant:

\int a d x = a x

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

Simplify

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

Compute the boundaries:

3 - x

= 3 - x

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\int_{- 1}^{1} x^{2} (x^{3} + 1)^{4} d x