SOLUTION: find all the numbers for which the rational expression is undefined? 1 over 8w plus 1. its in fraction mode.

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: find all the numbers for which the rational expression is undefined? 1 over 8w plus 1. its in fraction mode.      Log On


   



Question 326291: find all the numbers for which the rational expression is undefined? 1 over 8w plus 1. its in fraction mode.
Found 2 solutions by Fombitz, nyc_function:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The function is undefined when the denominator equals zero since division by zero is undefined.
8w%2B1=0
8w=-1
w=-1%2F8

Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
1/(8w + 1)
To find the number that makes this fraction undefined, set the denominator to zero and solve for w.
8w + 1 = 0
8w = -1
w = -1/8
This means that w can be any number EXCEPT for the fraction -1/8.
If w is replaced with -1/8, it will create a zero in the denominator making the entire fraction undefined because we cannot divide by zero.