If I am trying to find the volume of a shape of rotation around an axis using the disc method and I get a negative result, does this mean I did the method wrong, or should I just take the absolute value?
2007-02-19 15:42:32 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
you probably used the disk method wrong. the area should never be negative, and it would be very wrong to take the absolute value of it. i suggest you recheck your work. maybe you subtracted the two equations wrong
2007-02-19 15:55:05 · answer #1 · answered by tim 1 · 0⤊ 0⤋
You are probably using incorrect limits of integration. You should integrate separately between each intersection of your two bounding functions.
2007-02-20 00:00:36 · answer #2 · answered by a r 3 · 0⤊ 0⤋
I'm pretty sure you've made an error. If you could put the actual problem on-line I'm certain someone can help you further.
2007-02-19 23:54:47 · answer #3 · answered by Rob M 4 · 0⤊ 0⤋