What is the integral of 16e^{-16x} ?

The integral of 16e^{-16x} is -e^{-16x}+C

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integral of 16e^{-16x}

\int 16 e^{- 16 x} d x

- e^{- 16 x} + C

Solution steps

\int 16 e^{- 16 x} d x

Take the constant out:

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

= 16 \cdot \int e^{- 16 x} d x

Apply u-substitution

= 16 \cdot \int - \frac{1}{16} e^{u} d u

Take the constant out:

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

= 16 (- \frac{1}{16} \cdot \int e^{u} d u)

Use the common integral:

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

= 16 (- \frac{1}{16} e^{u})

Substitute back

u = - 16 x

= 16 (- \frac{1}{16} e^{- 16 x})

Simplify

16 (- \frac{1}{16} e^{- 16 x}) : - e^{- 16 x}

= - e^{- 16 x}

Add a constant to the solution

= - e^{- 16 x} + C