What is the integral from a to b of 3 ?

The integral from a to b of 3 is 3b-3a

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integral from a to b of 3

\int_{a}^{b} 3 d x

3 b - 3 a

Solution steps

\int_{a}^{b} 3 d x

Integral of a constant:

\int a d x = a x

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

Compute the boundaries:

3 b - 3 a

= 3 b - 3 a

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