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View Full Version : Maths Help!!! +rep



Charlottay!
18-04-2010, 07:57 PM
Need help from anyone thats done C2.

how do you differentiate y=3+2x / root x

do u differentiate the top part and then the bottom or do u some how take the bottom part to the top.

LoveToStack
18-04-2010, 08:54 PM
Separate the top so it's

y= 3/rootX + 2x/rootX

Then change rootX to x^1/2 and bring the x^1/2 up to the top of the first fraction so it becomes negative, and divide the second fraction by x^1/2 to get 2x^1/2:

y= 3x^-1/2 + 2x^1/2

From there you can differentiate.

Charlottay!
19-04-2010, 04:39 PM
yea i thought thats what i had to do. cheers. +rep :)

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