why do we take the reciprocal of a rational expression in a division problem but not in a multiplication problem?

noute66 · Registered: 05.07.2003 From: Chicago, IL

Hi math gurus! I am about one week through the semester, and getting a bit worried about my course work. I just don’t seem to get the stuff I am learning, especially things to do with why do we take the reciprocal of a rational expression in a division problem but not in a multiplication problem? . Could somebody out there please enlighten me with powers, trigonometry and angle suplements. I can’t afford to look for a tutor, but if anyone knows about other ways of improving topics like converting fractions or function range quickly, please help me out Thanks heaps

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