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Mathematics 21 Online
OpenStudy (marcelie):

help please !! Find the derivative of the function what did i do wrong.. http://prnt.sc/ahvc5c

OpenStudy (marcelie):

hmm isnt missing the 1/2

OpenStudy (astrophysics):

\[y= \cos(\sqrt{\sin(\tan \pi x)} )\] you should add appropriate brackets first of all

OpenStudy (marcelie):

hmm can you help me solve it

OpenStudy (astrophysics):

Yes

OpenStudy (astrophysics):

Note that it's a composite function inside the cosine so you have to apply chain rule, meaning take the derivative of cosine first

OpenStudy (astrophysics):

and go inwards

OpenStudy (marcelie):

can u draw it lol

OpenStudy (astrophysics):

\[y' = -\sin(\sqrt{\sin(\tan \pi x)}) \times (\sqrt{\sin(\tan(\pi x)})'\]

OpenStudy (astrophysics):

your solution doesn't make much sense to me, you're either doing too many steps at once or skipping them

OpenStudy (marcelie):

oh hmm i always get lost with this

OpenStudy (marcelie):

but can u write it like this

OpenStudy (marcelie):

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