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Easy calculus question ( need help)

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tigon
Posts: 131 - Karma: 10

sin(cos(x)... find the derivative

Feb 12 2009 10:41PM
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Tinga
Posts: 11349 - Karma: 2,333
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Feb 12 2009 10:48PM
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kingcomet32
Posts: 638 - Karma: 13
false, no calculus question is easy

but i think it may beeee

-sinx(cos(cosx))
Feb 12 2009 10:53PM
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Tinga
Posts: 11349 - Karma: 2,333
nah dude. f(g(x)) derivative equals f'(g(x))g'
Feb 12 2009 10:57PM
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skithesprings
Posts: 9086 - Karma: 1,349

yep,  it's -sin(x)cos(cos(x))

the TI-89 dont lie

Feb 12 2009 10:58PM
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Microcosm
Posts: 4765 - Karma: 153
ahahaha, nice

and sin(cos(x)) ?
-cos((cosx))sinx?
Feb 12 2009 10:58PM
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tigon
Posts: 131 - Karma: 10
okay so
sin(cos(x)
take derivative of sin which is cos

so

cos(cos(x))

and thats where i don't know what to do next
Feb 12 2009 10:58PM
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rhcp
Posts: 2598 - Karma: 18
Can people please stop making threads every time they don't feel like figuring out how to do a simple calc problem?
Feb 12 2009 10:59PM
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Tinga
Posts: 11349 - Karma: 2,333
you take the derivative of the inside function and multiply it by the entire thing so whatever the derivative of cos is -sin? i think. so you would have -sin(cos)(cos(x)) or something like that.
Feb 12 2009 11:01PM
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tigon
Posts: 131 - Karma: 10
k thanks

is that some sort of rule i could read up on?

Feb 12 2009 11:04PM
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sethski
Posts: 331 - Karma: 10
can people please stop saying stuff like this so that they feel good about themselves


as simple as it may or may not be, the kids asking for help so lets help him


if its easy, give it a shot. i personally dont know...im expecting a 1 on the AP test this year
Feb 12 2009 11:05PM
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skithesprings
Posts: 9086 - Karma: 1,349
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there, thread over, let it die,

next time post this shit on yahoo answers, not newschoolers

Feb 12 2009 11:08PM
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An10a_Eng
Posts: 2505 - Karma: 26
chain rule: d/dx (f(g(x)) = f'(g(x))*g'(x)

i forgot the question though im assuming is sin(cos(x))
cos(cos(x))*-sin(x)
Feb 12 2009 11:09PM
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tigon
Posts: 131 - Karma: 10
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Feb 12 2009 11:21PM
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rhcp
Posts: 2598 - Karma: 18
No.  It's absolutely ridiculous.  I can guarantee you if the thread creator spent more than a minute studying he would have come up with the answer.


Feb 12 2009 11:21PM
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Tinga
Posts: 11349 - Karma: 2,333
if you would have not cared so much you would have another minute to do something else other than argue a retarded point.
Feb 12 2009 11:23PM
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rhcp
Posts: 2598 - Karma: 18
You don't realize I love arguing. 

And the point is not retarded.
Feb 12 2009 11:24PM
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An10a_Eng
Posts: 2505 - Karma: 26
dude dont be a douche. weve all been there at somepoint and just seeing trig at the level is a bitch. either help him out or dont post. if you havent noticed peoples responses they are telling him how to do it so hes gonna learn it one way or another. maybe his book could be hard to understand
Feb 12 2009 11:24PM
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tigon
Posts: 131 - Karma: 10
http://www.pete-online.us/cjimages/4I%27mSorry%20note.jpg
Feb 12 2009 11:26PM
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Tinga
Posts: 11349 - Karma: 2,333
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Feb 12 2009 11:28PM
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sethski
Posts: 331 - Karma: 10
word. as mentioned before calc is by no means "easy" and only a portion of kids in HS even attempt it. This is my second year of calc and i dont remember how to do it either

calc is heinous
like your anus
Feb 12 2009 11:31PM
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tigon
Posts: 131 - Karma: 10
got no book
Feb 12 2009 11:32PM
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An10a_Eng
Posts: 2505 - Karma: 26
no worries man, post questions in the cult youll be good to go
Feb 12 2009 11:45PM
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killa_cam
Posts: 13143 - Karma: 15
sin(cos(x)) = -cos(cos(x))sin(x)
Feb 12 2009 11:48PM
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kingcomet32
Posts: 638 - Karma: 13
dominated that shit
Feb 13 2009 9:17PM
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