Urgent Help Needed for Math P3

[Minimori]

I would really appreciate it if someone could explain how to do differential equations. Here's an example, if you'd like to use one: http://www.xtremepapers.com/papers/...AS Level/Mathematics (9709)/9709_s09_qp_3.pdf QUESTION 8 part ii

THANKYOU

 

[hychristine]

in the 1st part you get value of A, B and C
so the eqn becomes 1/x + 1/10-x +10/x^2

so you integrate both side
which becomes
lnx+ln(10-x)-10/x = t +c

when t=0,x=1
so you get C
then use x in terms of t: t=ln(9x/10-x) - 10/x +10