# Primitive of Exponential Function/Real

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## Theorem

- $\ds \int e^x \rd x = e^x + C$

where $C$ is an arbitrary constant.

## Proof for Real Numbers

Let $x \in \R$ be a real variable.

\(\ds \map {D_x} {e^x}\) | \(=\) | \(\ds e^x\) | Derivative of Exponential Function |

The result follows by the definition of the primitive.

$\blacksquare$

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