SOLUTION: Solve the inequality using a sign chart. Support graphically. SHow the equations that find the real zeros. ((x-5)/(x^2-36))<0

Algebra ->  Rational-functions -> SOLUTION: Solve the inequality using a sign chart. Support graphically. SHow the equations that find the real zeros. ((x-5)/(x^2-36))<0      Log On


   



Question 1126016: Solve the inequality using a sign chart. Support graphically. SHow the equations that find the real zeros.
((x-5)/(x^2-36))<0

Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!


f%28x%29+=+%28x-5%29%2F%28x%5E2-36%29+=+%28x-5%29%2F%28%28x-6%29%28x%2B6%29%29

f(x) is 0 at x = 5 only.

f(x) is undefined (so there are vertical asymptotes) at x=-6 and x=6.

The zeros of the numerator and denominator divide the domain into four parts: (-infinity,-6), (-6,5], [5,6), and (6, infinity).
                  |  x+6  x-5  x-6  |  f(x)
  --------------------------------------------
  (-infinity, -6) |   -    -    -   |   -
           (-6,5] |   +    -    -   |   +
            [5,6) |   +    +    -   |   -
    (6, infinity) |   +    +    +   |   +


The function is negative on (-infinity,-6) and on (5,6); it is 0 at x=5; the value goes to positive or negative infinity close to the vertical asymptotes, at x=-6 and x=6.

The graph...

graph%28400%2C400%2C-10%2C10%2C-1%2C1%2C%28x-5%29%2F%28x%5E2-36%29%29