What is the integral from 0.2 to 0.4 of 200x ?

The integral from 0.2 to 0.4 of 200x is 12

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integral from 0.2 to 0.4 of 200x

\int_{0.2}^{0.4} 200 x d x

12

Solution steps

\int_{0.2}^{0.4} 200 x d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 200 \cdot \int_{0.2}^{0.4} x d x

Apply the Power Rule

: [\frac{x ^{2}}{2}]_{0.2}^{0.4}

= 200 [\frac{x ^{2}}{2}]_{0.2}^{0.4}

Simplify

= 200 [0.5 x^{2}]_{0.2}^{0.4}

Compute the boundaries:

0.06

= 200 \cdot 0.06

Simplify

= 12

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What is the integral from 0.2 to 0.4 of 200x ?
The integral from 0.2 to 0.4 of 200x is 12