What is the integral of 3*e^x ?

The integral of 3*e^x is 3e^x+C

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integral of 3*e^x

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

3 e^{x} + C

Solution steps

\int 3 e^{x} d x

Take the constant out:

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

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

Use the common integral:

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

= 3 e^{x}

Add a constant to the solution

= 3 e^{x} + C