Question 466904: Find the domain of the function and express the answer in interval notation. Explain in words and show the calculations
13x^2-5x+9=0
Thank You
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the domain of the function and express the answer in interval notation. Explain in words and show the calculations
13x^2-5x+9=0
Use Quadratic formula:
x = [5 +- sqrt(25-4*13*9)]/26
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x = [5 +- sqrt(27)]/26
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x = [5 +- 3sqrt(3)]/26
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Cheers,
Stan H.
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Equations don't have a domain; they have solution(s).
A rule, such as f(x) = 13x^2-5x+9 has a domain; it has an infinite # of solutions.
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Cheers,
Stan H.
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