Calculus Examples

$\frac{d y}{d x} = e^{6 x}$

Step 1

Rewrite the equation.

$d y = e^{6 x} d x$

Step 2

Integrate both sides.

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Step 2.1

Set up an integral on each side.

$\int d y = \int e^{6 x} d x$

Step 2.2

Apply the constant rule.

$y + C_{1} = \int e^{6 x} d x$

Step 2.3

Integrate the right side.

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Step 2.3.1

Let $u = 6 x$ . Then $d u = 6 d x$ , so $\frac{1}{6} d u = d x$ . Rewrite using $u$ and $d$ $u$ .

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Step 2.3.1.1

Let $u = 6 x$ . Find $\frac{d u}{d x}$ .

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Step 2.3.1.1.1

Differentiate $6 x$ .

$\frac{d}{d x} [6 x]$

Step 2.3.1.1.2

Since $6$ is constant with respect to $x$ , the derivative of $6 x$ with respect to $x$ is $6 \frac{d}{d x} [x]$ .

$6 \frac{d}{d x} [x]$

Step 2.3.1.1.3

Differentiate using the Power Rule which states that $\frac{d}{d x} [x^{n}]$ is $n x^{n - 1}$ where $n = 1$ .

$6 \cdot 1$

Step 2.3.1.1.4

Multiply $6$ by $1$ .

$6$

Step 2.3.1.2

Rewrite the problem using $u$ and $d u$ .

$y + C_{1} = \int e^{u} \frac{1}{6} d u$

Step 2.3.2

Combine $e^{u}$ and $\frac{1}{6}$ .

$y + C_{1} = \int \frac{e^{u}}{6} d u$

Step 2.3.3

Since $\frac{1}{6}$ is constant with respect to $u$ , move $\frac{1}{6}$ out of the integral.

$y + C_{1} = \frac{1}{6} \int e^{u} d u$

Step 2.3.4

The integral of $e^{u}$ with respect to $u$ is $e^{u}$ .

$y + C_{1} = \frac{1}{6} (e^{u} + C_{2})$

Step 2.3.5

Simplify.

$y + C_{1} = \frac{1}{6} e^{u} + C_{2}$

Step 2.3.6

Replace all occurrences of $u$ with $6 x$ .

$y + C_{1} = \frac{1}{6} e^{6 x} + C_{2}$

Step 2.4

Group the constant of integration on the right side as $K$ .

$y = \frac{1}{6} e^{6 x} + K$