![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
If the function is increasing then using the right endpoints will cause the area of the rectangles to be
\greater than the actual area while using the left endpoints causes the area of the rectangles to be less.
\But, if the function is decreasing, then using left endpoints will cause the area of the rectangles to
\be greater than the actual area while using the right endpoints causes the area of the rectangles to be
\less.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Neither;If the function is increasing then using the right endpoints will cause the area of the rectangles
\to be greater than the actual area while using the left endpoints causes the area of the rectangles to be less.But, if the function is decreasing, then using left endpoints will cause the area of the rectangles to
\be greater than the actual area while using the right endpoints causes the area of the rectangles to be
\less.