What is the integral of-3w^2e^{-w^3} ?

The integral of-3w^2e^{-w^3} is e^{-w^3}+C

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integral of-3w^2e^{-w^3}

\int - 3 w^{2} e^{- w^{3}} d w

e^{- w^{3}} + C

Solution steps

\int - 3 w^{2} e^{- w^{3}} d w

Take the constant out:

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

= - 3 \cdot \int w^{2} e^{- w^{3}} d w

Apply u-substitution

: \int - \frac{e ^{u}}{3} d u

= - 3 \cdot \int - \frac{e ^{u}}{3} d u

Take the constant out:

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

= - 3 (- \frac{1}{3} \cdot \int e^{u} d u)

Use the common integral:

\int e^{u} d u = e^{u}

= - 3 (- \frac{1}{3} e^{u})

Substitute back

u = - w^{3}

= - 3 (- \frac{1}{3} e^{- w^{3}})

Simplify

- 3 (- \frac{1}{3} e^{- w^{3}}) : e^{- w^{3}}

= e^{- w^{3}}

Add a constant to the solution

= e^{- w^{3}} + C

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What is the integral of-3w^2e^{-w^3} ?
The integral of-3w^2e^{-w^3} is e^{-w^3}+C