Calculus Examples

$e^{y} \frac{d y}{d x} = 1$

Step 1

Rewrite the equation.

$e^{y} d y = 1 d x$

Step 2

Integrate both sides.

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Step 2.1

Set up an integral on each side.

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

Step 2.2

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

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

Step 2.3

Apply the constant rule.

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

Step 2.4

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

$e^{y} = x + K$

Step 3

Solve for $y$ .

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Step 3.1

Take the natural logarithm of both sides of the equation to remove the variable from the exponent.

$\ln (e^{y}) = \ln (x + K)$

Step 3.2

Expand the left side.

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Step 3.2.1

Expand $\ln (e^{y})$ by moving $y$ outside the logarithm.

$y \ln (e) = \ln (x + K)$

Step 3.2.2

The natural logarithm of $e$ is $1$ .

$y \cdot 1 = \ln (x + K)$

Step 3.2.3

Multiply $y$ by $1$ .

$y = \ln (x + K)$