What is the integral of 3xe^{1/2 x^2} ?

The integral of 3xe^{1/2 x^2} is 3e^{(x^2)/2}+C

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integral of 3xe^{1/2 x^2}

\int 3 x e^{\frac{1}{2} x^{2}} d x

3 e^{\frac{x ^{2}}{2}} + C

Solution steps

\int 3 x e^{\frac{1}{2} x^{2}} d x

Take the constant out:

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

= 3 \cdot \int x e^{\frac{1}{2} x^{2}} d x

Simplify

\frac{1}{2} x^{2} : \frac{x ^{2}}{2}

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

Apply u-substitution

: \int \frac{e ^{\frac{u}{2}}}{2} d u

= 3 \cdot \int \frac{e ^{\frac{u}{2}}}{2} d u

Take the constant out:

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

= 3 \cdot \frac{1}{2} \cdot \int e^{\frac{u}{2}} d u

Apply u-substitution

: \int e^{v} \cdot 2 d v

= 3 \cdot \frac{1}{2} \cdot \int e^{v} \cdot 2 d v

Take the constant out:

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

= 3 \cdot \frac{1}{2} \cdot 2 \cdot \int e^{v} d v

Use the common integral:

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

= 3 \cdot \frac{1}{2} \cdot 2 e^{v}

Substitute back

= 3 \cdot \frac{1}{2} \cdot 2 e^{\frac{x ^{2}}{2}}

Simplify

3 \cdot \frac{1}{2} \cdot 2 e^{\frac{x ^{2}}{2}} : 3 e^{\frac{x ^{2}}{2}}

= 3 e^{\frac{x ^{2}}{2}}

Add a constant to the solution

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

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What is the integral of 3xe^{1/2 x^2} ?
The integral of 3xe^{1/2 x^2} is 3e^{(x^2)/2}+C