What is the integral of 3x^5e^{x^3} ?

The integral of 3x^5e^{x^3} is e^{x^3}x^3-e^{x^3}+C

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integral of 3x^5e^{x^3}

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

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

Solution steps

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

Take the constant out:

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

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

Apply u-substitution

= 3 \cdot \int \frac{e ^{u^{\frac{3}{5}}} u ^{\frac{1}{5}}}{5} d u

Take the constant out:

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

= 3 \cdot \frac{1}{5} \cdot \int e^{u^{\frac{3}{5}}} u^{\frac{1}{5}} d u

Apply u-substitution

= 3 \cdot \frac{1}{5} \cdot \int \frac{5 e ^{v} v}{3} d v

Take the constant out:

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

= 3 \cdot \frac{1}{5} \cdot \frac{5}{3} \cdot \int e^{v} v d v

Apply Integration By Parts

= 3 \cdot \frac{1}{5} \cdot \frac{5}{3} (e^{v} v - \int e^{v} d v)

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

= 3 \cdot \frac{1}{5} \cdot \frac{5}{3} (e^{v} v - e^{v})

Substitute back

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

Simplify

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

= e^{x^{3}} x^{3} - e^{x^{3}}

Add a constant to the solution

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

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