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Calculus1 14 Online
OpenStudy (anonymous):

Hi , can someone help me with a question in this PDf file ?? its Question 6 on page 14

OpenStudy (anonymous):

OpenStudy (tkhunny):

Have you considered expanding \(\cos(x+h)\)? Is it legal to help you on this?

OpenStudy (anonymous):

yea it is dont worry, its a practice assignment and yea could u give me the first dew steps ??

OpenStudy (tkhunny):

There is only one. \(\cos(x+h) = \cos(x)\cos(h) - \sin(x)\sin(h)\). This is an identity you should memorize and have at the ready!

OpenStudy (anonymous):

would i take the derative of the -cosx?

OpenStudy (tkhunny):

Why would you do that? Do we have l'hospital's rule? Is it an Indeterminate Form?

OpenStudy (anonymous):

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