Hey, how about the washer method? Can you use the figure below and the following to do it? Pretty sure that's it. Did it kinda' quick. Double-check it ok.
and are the equations for the two lines in terms of right? For example .
Please help! I am beating my head over this one.
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A triangle is formed by the lines x = 1; x + y = 7; and
3x-4y=7. Rotate the triangle about the line x=-1 to create a volume. Find volume by setting up definite integral.
Thanks out there to anyone who can help.
Hey, how about the washer method? Can you use the figure below and the following to do it? Pretty sure that's it. Did it kinda' quick. Double-check it ok.
and are the equations for the two lines in terms of right? For example .
after looking at it further, I figured that the +1 in the figure is the extra length on the radius b/c of rotation around the line x=-1. Did I figure right? Also, where did the negative four come from? Does it come from the inner cylinder formed with a volume of 4? Thanks again.