Question 555148
what value (if any) must be excluded from the domain? 
x^2-1
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x 

a)x=4 b)x=1 c)x=0 d)x=-1
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The denominator cannot be zero.
Ans: x = 0
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Are there sites that will help me solve these types of problems?
Use Google to search for "finding domain and range of a function".
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Cheers,
Stan H.
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