What is the integral of (3cos(t)) ?

The integral of (3cos(t)) is 3sin(t)+C

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integral of (3cos(t))

\int (3 cos (t)) d t

3 sin (t) + C

Solution steps

\int 3 cos (t) d t

Take the constant out:

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

= 3 \cdot \int cos (t) d t

Use the common integral:

\int cos (t) d t = sin (t)

= 3 sin (t)

Add a constant to the solution

= 3 sin (t) + C

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