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Where did this y^4 come from?
Doing my calc work and there is a problem that I can't figure out where an extra factor of y came from. Should this value not be y^3? The book says y^4 and I can't figure out why. I get everything else, except this extra factor of y.
(The y has an arrow above it)
http://tinypic.com/r/2zgg0vm/6
Thanks!
1 Answer
- JacintaLv 78 years agoFavorite Answer
They've multiplied the fraction immediately preceding the one you've indicated by y top and bottom.
This gives them an easy way to cancel the y^3's at the right-hand end of that particular fraction.
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