SOLUTION: Let F(x)= -2x/(x^2-x-11). There are two numbers that are not in the domain of f. Give the larger value to 2 decimal places....... This is one of my homework questions and I am not
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Question 754687: Let F(x)= -2x/(x^2-x-11). There are two numbers that are not in the domain of f. Give the larger value to 2 decimal places....... This is one of my homework questions and I am not even understanding what they are asking for... HELPPP PLEASE!!!! Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Let F(x)= -2x/(x^2-x-11). There are two numbers that are not in the domain of f. Give the larger value to 2 decimal places.------
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The denominator cannot be zero.
Solve:
x^2-x-11 = 0
x = [1 +-sqrt(1-4*-11)]/2
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x = [1 +- sqrt(45)]/2
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x = [1+-3sqrt(5)]/2
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Larger value that is not in the domain:
x = [1+3sqrt(5)]/2
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Cheers,
Stan H.
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