What is the integral of 5xe^{-3x^2} ?

The integral of 5xe^{-3x^2} is -5/6 e^{-3x^2}+C

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integral of 5xe^{-3x^2}

\int 5 x e^{- 3 x^{2}} d x

- \frac{5}{6} e^{- 3 x^{2}} + C

Solution steps

\int 5 x e^{- 3 x^{2}} d x

Take the constant out:

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

= 5 \cdot \int x e^{- 3 x^{2}} d x

Apply u-substitution

: \int - \frac{e ^{u}}{6} d u

= 5 \cdot \int - \frac{e ^{u}}{6} d u

Take the constant out:

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

= 5 (- \frac{1}{6} \cdot \int e^{u} d u)

Use the common integral:

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

= 5 (- \frac{1}{6} e^{u})

Substitute back

u = - 3 x^{2}

= 5 (- \frac{1}{6} e^{- 3 x^{2}})

Simplify

5 (- \frac{1}{6} e^{- 3 x^{2}}) : - \frac{5}{6} e^{- 3 x^{2}}

= - \frac{5}{6} e^{- 3 x^{2}}

Add a constant to the solution

= - \frac{5}{6} e^{- 3 x^{2}} + C

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\int \frac{( x ^{2} + 1 )}{x} d x

\int \frac{e ^{3 x}}{e ^{3 x} + 7} d x

What is the integral of 5xe^{-3x^2} ?
The integral of 5xe^{-3x^2} is -5/6 e^{-3x^2}+C