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P3 help :D

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thecandydoll:
I got three doubts,could y'all help me out?


Oct/Nov 2003 Q4 (ii)
May June 2004 (Q6)
Oct/Nov 2004 Q10 (ii)

thecandydoll:
BUMPPP

elemis:
From the equation y=x we can :

Replace x in the original equation (given in the question) and solve for x.

Do the same for y, except replace with x.

You should get the coordinates of intersection as (a/4,a/4)

Input the these into dy/dx and solve :



Simplify to -1.

Construct an equation :

y-a/4 = -1(x-a/4)

Simplify to answer in markscheme.

elemis:
Split the variables :







When y=1 and x=0, c = \frac{1}{3}ln(2)



Can't you continue from here ?

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