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Math paper4 Jun. 2009 help

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Ghost Of Highbury:

--- Quote from: lol on November 03, 2009, 08:23:46 am ---Yep IGCSE 0580 Maths Paper 4 June 2009

Yea I could do it that way, but I just want to check using differentiation because i'm going to need to be able to do that way later. Also sometimes my tangents aren't very accurate so I just want to be able to use differentiation to check it.

Thanks

--- End quote ---

dy/dx (x/2 - 2/x) = 1/2 +  2/x2 => substituing x=2 --> m = 1

@d!_†oX!©:
hey aadi cud u explain me differentiation more briefly...i wud want to learn to check my answer if possible...pm me or better come on gmail...

Ghost Of Highbury:
its difficult to learn differentiation in such a short span of..there are different methods for different type

for e.g here...u have to apply the u/v rule..

so yea..maybe later..

lol:
Thanks but i don't understand why it is x^2, isn't it x^-2 because the original power is -1 and we reduce it by 1 we get -2

~~~~shreyapril~~~~:
ya ure rite!!
but x^-2 becomes 1/x^2!!!

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