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Simple differentiation

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1. Hi guys I'm stuck own differentiation of x=cos(y/2) +1
would help if someone explained each step I don't understand why it is
-1/2sin(y/2)
2. Use the chain rule.

let u = y/2 and find
3. (Original post by NotNotBatman)
Use the chain rule.

let u = y/2 and find
Thanks but what would u' would be
4. (Original post by Wisteria_xo)
Hi guys I'm stuck own differentiation of x=cos(y/2) +1
would help if someone explained each step I don't understand why it is
-1/2sin(y/2)

omg i'm procrastinating so hard that i'm answering maths questions wtf is my life
5. (Original post by Wisteria_xo)
Thanks but what would u' would be
Is it Easier to see if written like this. ?
6. (Original post by Rhaenys10)

omg i'm procrastinating so hard that i'm answering maths questions wtf is my life
lool AH MAKES SO MUCH SENSE thank you !
7. (Original post by NotNotBatman)
Is it Easier to see if written like this. ?
yes yes yes helped a lot thank you!!! Blind moment !
8. (Original post by Wisteria_xo)
lool AH MAKES SO MUCH SENSE thank you !
you're welcome

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Updated: September 18, 2016
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