Thank you Mark44, I understand this problem by heart already, but kindly understand it's a bit time consuming on tests, quizzes so forth.often when your on a limited time frame.
using partial fractions I obtained
(x^2-2x+3)
-----------dx
((x-2)(x^2+x+1)
A bx+c
-- + --------
x-2 x^2+x+1
A=3/7
B=4/7
c=-9/7
this is my attempt, i how it helps somwhat, I'm not sure if it's correct so I apologize early on.
Homework Statement
A tank contains 1000L of brine with 15 Kg of dissolved salt. Pure water enters the tank at a rate of 10 L/Min. The soultion is kept thoroughtly mixed and drained from the tank at the same rate. How much salt is in the tank(a) after t minutes and (b) after 20 minutes...