Need help verifying an answer about piecewise functions.  TOPIC_SOLVED

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Need help verifying an answer about piecewise functions.

Postby rogermiranda on Mon Oct 18, 2010 4:18 am

Here is the problem:
Find the domain and range of this piecewise defined function;
f(x)= -2x^2 with restriction x greater than or equal to -2 and less than 1
-0.5 with restriction x=1
x with restriction x greater than 1

After graphing the piecewise functions, I determined that the domain = [-2, positive infinity]
and the range = [-8, 0] U (1, positive infinity].
The textbook has the answer D= [-1, positive infinity] and R= [-2, positive infinity].
Can someone please help me verify which answer is correct? Or maybe their both wrong? Thanks :confused:
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Postby stapel_eliz on Mon Oct 18, 2010 11:23 am

I get the same answer you got. I'm guessing the book has a typo. :wink:
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