Not sure how to differentiate these functions, if you could show the steps for either function that'd be great :).

Sorry I also don't know how to format it correctly so bear with me.

Question:

at t = 6

and

at theta = pi/3

Thanks!

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- Mar 27th 2011, 12:57 PMShoutDifferentiating sin functions
Not sure how to differentiate these functions, if you could show the steps for either function that'd be great :).

Sorry I also don't know how to format it correctly so bear with me.

Question:

at t = 6

and

at theta = pi/3

Thanks! - Mar 27th 2011, 01:02 PMpickslides

Also

by the chain rule. - Mar 27th 2011, 03:36 PMShout
I can't seem to make the second one work.

This is what I did;

3sin(x-pi/6) becomes

3cos(x-pi/6)*(1)

Whats wrong with that?

The answer is supposed to be 0.05 but i keep getting 2.99. - Mar 27th 2011, 04:01 PMpickslides
By the chain rule

Make

Now find - Mar 27th 2011, 04:06 PMShout
I'm still confused, would you be able to show me the next step and then maybe I'll understand?

- Mar 27th 2011, 04:09 PMpickslides
It seems your attempt is fine. In post #2 I should've written

- Mar 27th 2011, 04:16 PMShout
Alright, so then it will be y' = 3*cos(pi/3-pi/6) which leaves me at 2.59