Question 1044898: find the domain of the function f(x)= (x^2-16)/7 Found 3 solutions by josgarithmetic, ikleyn, MathTherapy:Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website! The minimum point for f occurs in the x value the exact MIDDLE of x=-4 and x=4, meaning at x=0. What is the corresponding y-coordinate?
f has vertex as a minimum, opens upward, and so all y-values are greater than or equal to or .
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correction to range inequality was made, so graph should be reliable now.
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I had discussed RANGE, but original question was about DOMAIN. What is the set of possible acceptable values for x? ALL REAL NUMBERS is this set. All real numbers . Answer by ikleyn(52800) (Show Source): You can put this solution on YOUR website! .
The domain is the set of all real numbers.
I answered this in: Functions/1044866:
Why do you ask this, AGAIN?
DO you really think it's fair to deprive others of help by posting your problem more than once, after getting your answer?
I wonder what you think!