Posted by Amy on Wednesday, December 8, 2010 at 11:15pm.
Can anyone help with the following problem please...Thank u so much
Let f(x) =|9x|. For the area above the x-axis and between the lines x= -9 and x=18
a. draw and label a sketch with
the area shaded
b. find the area of the region in
the xy-plane under the graph
- Pre-Calc - MathMate, Wednesday, December 8, 2010 at 11:36pm
For this kind of problem, it is always desirable to make a sketch within the limits of the domain, from x=-9 to 18.
Using the formula for the area of a triangle as:
Area = (1/2)base*height
You can find the areas of the two triangles between the function and the x-axis.
If you need further help, don't hesitate to post.
- Pre-Calc - Reiny, Thursday, December 9, 2010 at 12:19am
Amy, please check to see if your question has been answered before posting the same question again.
you asked the same question with only a small change yesterday,
MathMate has gone to some length to answer it again, even creating a picture for you.
make a note of your post by jotting down the time of the first posting, even though it moves off the page, it is then rather easy to find
- Pre-Calc - Amy, Thursday, December 9, 2010 at 12:30am
Thank you for your help
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