Proof of Quotient Rule using Product Rule

  • Thread starter gomess
  • Start date
  • #1
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Main Question or Discussion Point

Hey guys, just trying to understand how the quotient rule is derived, so I head over to wikipedia and saw this:

attachment.php?attachmentid=68783&stc=1&d=1397845277.jpg


But I'm having some difficulty understanding what goes on between these two steps:

attachment.php?attachmentid=68784&stc=1&d=1397845277.jpg


Could someone shed some light on this?
 

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  • #2
STEMucator
Homework Helper
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It looks like they are multiplying by ##1 = \frac{h(x)}{h(x)}##
 
  • #3
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Oh, okay. Cant believe I didnt see that; it was so simple. Sorry to whoever moved my thread for posting in wrong the section. Thanks Zondrina!
 
  • #4
33,745
5,434
I moved it. This seemed more like a technical question than homework, so I move it here.

Also, what Zondrina said is exactly what happened - they multiplied by 1 in the form of h(x) over itself.

Also, if you post images again, crop or shrink them so that they fit. 900 pixels wide is about the maximum - yours is 1071 pixels wide, so causes the post to be too wide.
 
  • #5
14
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Alright, no problem. Thanks again guys.
 

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