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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: HubbaBubba on October 25, 2014, 09:00:01 pm

Title: Derivative of CAS
Post by: HubbaBubba on October 25, 2014, 09:00:01 pm

how do I get f'(pi) when f(x)=2cos^2(x/4)+1. Doing these types of problems by hand is no problem but in an exam its better not to waste time. The bit where it says ^2(x/4) is not joined, it is only to the power of 2. I keep getting the error Missing (.

Title: Re: Derivative of CAS
Post by: theshunpo on October 25, 2014, 09:10:04 pm

You must not be putting brackets around the whole cos(x/4) then squaring it.
In the image attached f(x) is how to define it.
g(x) on the other hand is when you get the error

Edit: I assumed you meant Ti-Nspire, hope it helps

Title: Re: Derivative of CAS
Post by: HubbaBubba on October 25, 2014, 10:31:09 pm

IT WORKED!!! :)

THANKS SO MUCH theshunpo