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OpenStudy (anonymous):
Can someone help me find lim of x approaches 0 of (1-cos5x)/7x^2 ?
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OpenStudy (anonymous):
I need to get there without l'hopital's rule, as we haven't studied that yet. I'm having problems with the algebraic manipulation.
OpenStudy (anonymous):
1-cos5x=1-(1-2sin^2(5x/2))=2sin^2(5x/2).......lim..[2sin^2(5x/2)]/7x^2=25/14
OpenStudy (anonymous):
Awesome, thanks!
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