SOLUTION: Consider the rational function f(x)=2x/x-1. Give: The domain The Vertical Asymtote The Horizontal Azymptote The Graph. Please help me with this problem. I don't even know whe

Algebra ->  Rational-functions -> SOLUTION: Consider the rational function f(x)=2x/x-1. Give: The domain The Vertical Asymtote The Horizontal Azymptote The Graph. Please help me with this problem. I don't even know whe      Log On


   



Question 34186: Consider the rational function f(x)=2x/x-1. Give:
The domain
The Vertical Asymtote
The Horizontal Azymptote
The Graph.
Please help me with this problem. I don't even know where to start. Thank you.

Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
Consider the rational function f(x)=2x/x-1. Give:
The domain
DOMAIN IS THOSE VALUES OF X WHICH RENDER THE FUNCTION MEANINGFULL MATHEMATICALLY.CERTAIN OPERATIONS LIKE DIVISION BY ZERO ARE PROHIBITED IN MATHS.HERE IF X=1,THEN D.R.=X-1=0,WHICH IS NOT PERMISSIBLE..SO DOMAIN IS ALL VALUES OF X OTHER THAN X=1.
The Vertical Asymtote
FROM THE GRAPH BELOW YOU CAN SEE THAT THE PROHIBITED DOMAIN X=1 IS THE VERTICAL ASYMPTOTE...THAT IS THE VERTICAL LINE WHICH REPRESENTS A LIMITING BOUNDARY AS Y TENDS TO PLUS OR MINUS INFINITY
The Horizontal Azymptote
FROM THE GRAPH BELOW YOU CAN SEE THAT Y=2 IS THE HORIZONTAL ASYMPTOTE ..THAT IS THE HORIZONTAL LINE WHICH REPRESENTS A LIMITING POSITION AS X TENDS TO PLUS OR MINUSINFINITY
The Graph.
THE GRAPH IS AS FOLLOWS
X...........-1.........0............0.99.........1.01........2....ETC......
F(X)........1..........0............-198......... 202........4.........ETC...
PLOTTING THE ABOVE DATA WE GET....

+graph%28+600%2C+600%2C+-10%2C+10%2C+-20%2C+20%2C+2x%2F%28x-1%29%29+