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October 6th, 2012, 07:03 PM   #1
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Calc

How to find derivative of y when y=4sin(sq rt x)-2(sq rt x)cos(sq rt x)
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October 6th, 2012, 07:32 PM   #2
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Re: Calc

We are given:



To differentiate, we will need to use the chain and product rules:



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October 6th, 2012, 07:42 PM   #3
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Re: Calc

find 2nd derivative of, f'', of f when f(x)= (x+2)/(x-3)
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October 6th, 2012, 07:47 PM   #4
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Re: Calc

Use the quotient rule, twice. Post your attempt, and if you get stuck, I will help.
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October 6th, 2012, 10:59 PM   #5
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Re: Calc

Quote:
Originally Posted by henoshaile
find 2nd derivative of, f'', of f when f(x)= (x+2)/(x-3)

Now it is easier to apply your standard chain rule. I have noticed that sometimes quotient rule becomes too complicated.
Therefore, it is much better to prefer algebraic reduction into easier functions.
Regards,
Rejjy
07-Oct-2012
12:28 IST
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