Solving Rational Inequalities

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
Seaweed09
Posts: 6
Joined: Wed Aug 10, 2011 8:12 pm
Contact:

Solving Rational Inequalities

Postby Seaweed09 » Thu Aug 11, 2011 3:46 pm

Solve this inequality: (t-2)(t+3)/(t-4)>=0.
I did it using a factor table, and I got the results -3<=x<=2 and x>=4, but the answer says it should be x>4 instead, and I am not sure how they go that. Thanks in advance!

User avatar
little_dragon
Posts: 202
Joined: Mon Dec 08, 2008 5:18 pm
Contact:

Re: Solving Rational Inequalities

Postby little_dragon » Thu Aug 11, 2011 4:37 pm

Seaweed09 wrote:Solve this inequality: (t-2)(t+3)/(t-4)>=0.
I did it using a factor table, and I got the results -3<=x<=2 and x>=4, but the answer says it should be x>4 instead, and I am not sure how they go that. Thanks in advance!

U cant divide by 0!
if t=4 then t-4=0
:wave:

Seaweed09
Posts: 6
Joined: Wed Aug 10, 2011 8:12 pm
Contact:

Re: Solving Rational Inequalities

Postby Seaweed09 » Thu Aug 11, 2011 4:53 pm

Thanks!


Return to “Advanced Algebra ("pre-calculus")”