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

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

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

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

\frac{1}{2} (e^{w^{2}} w^{2} - e^{w^{2}}) + C

Solution steps

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

Apply u-substitution

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

Take the constant out:

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

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

Apply u-substitution

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

Take the constant out:

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

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

Apply Integration By Parts

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

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

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

Substitute back

= \frac{1}{3} \cdot \frac{3}{2} (e^{(w^{3})^{\frac{2}{3}}} (w^{3})^{\frac{2}{3}} - e^{(w^{3})^{\frac{2}{3}}})

Simplify

\frac{1}{3} \cdot \frac{3}{2} (e^{(w^{3})^{\frac{2}{3}}} (w^{3})^{\frac{2}{3}} - e^{(w^{3})^{\frac{2}{3}}}) : \frac{1}{2} (e^{w^{2}} w^{2} - e^{w^{2}})

= \frac{1}{2} (e^{w^{2}} w^{2} - e^{w^{2}})

Add a constant to the solution

= \frac{1}{2} (e^{w^{2}} w^{2} - e^{w^{2}}) + C

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