- #1

doctordiddy

- 54

- 0

## Homework Statement

∫(0 to 3pi/2) -7|sinx|dx

## Homework Equations

## The Attempt at a Solution

I am not sure how to treat it as it has an absolute value

i assumed that you could remove the -7 to get

-7∫|sinx| dx

then integrate sinx into -cosx but since there is absolute value i tried to change -cosx to cosx which ended up as

-7cosx

and then doing -7cos(3pi/2)-(-7cos(0))

but this was incorrect. Can anyone give me any hints?

thanks