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OpenStudy (joannablackwelder):
One way the function is undefined is dividing by 0. Is there a value of x you can plug in that the denominator will be zero?
OpenStudy (dannyrod2000):
it is asking for defined :)
OpenStudy (joannablackwelder):
Right, but if we can find where it is undefined, we can narrow down what is defined.
OpenStudy (dannyrod2000):
ohhh
OpenStudy (joannablackwelder):
Or you could find it more directly by plugging in numbers. But that would be a longer method. :)
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OpenStudy (usukidoll):
wouldn't the problem be undefined if x = 1?
OpenStudy (dannyrod2000):
i was thinking about that :)
OpenStudy (usukidoll):
|dw:1407996478510:dw|
OpenStudy (usukidoll):
If x = 1, then we will have the square root of 0 which is 0 boom ... undefined right there.
OpenStudy (joannablackwelder):
Yes, that was the value I was trying to encourage @dannyrod2000 to get...
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OpenStudy (dannyrod2000):
so it can't be A and B?
OpenStudy (joannablackwelder):
Why not A?
OpenStudy (dannyrod2000):
i mean B and D
OpenStudy (usukidoll):
some of the answer choices are written weird... as in not in standard form.
OpenStudy (dannyrod2000):
its APEX :)
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OpenStudy (joannablackwelder):
Good!
OpenStudy (joannablackwelder):
The other criteria that makes a function undefined is to have a negative under an even radical.
OpenStudy (dannyrod2000):
so it can't be B
OpenStudy (joannablackwelder):
RIght.
OpenStudy (dannyrod2000):
xD
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OpenStudy (joannablackwelder):
:D
OpenStudy (dannyrod2000):
i good at this
OpenStudy (joannablackwelder):
You're getting there!
OpenStudy (dannyrod2000):
so itss A!!!!!!
OpenStudy (joannablackwelder):
You got it!!!!
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OpenStudy (dannyrod2000):
xD yay
OpenStudy (anonymous):
It's asking where it's defined @UsukiDoll
OpenStudy (joannablackwelder):
Great job! :)
OpenStudy (dannyrod2000):
\[\bigstar I~AM~BATMAN \bigstar\]
OpenStudy (dannyrod2000):
xD jk @iambatman is BATMAN
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OpenStudy (dannyrod2000):
actually DARK NIGHT
OpenStudy (usukidoll):
@iambatman
quoting someone from earlier
74
JoannaBlackwelder Human Calculator
Medals 3
Right, but if we can find where it is undefined, we can narrow down what is defined.
OpenStudy (dannyrod2000):
well i have more questions!
OpenStudy (dannyrod2000):
thanks @UsukiDoll
OpenStudy (usukidoll):
I neeed to eat. Can't solve without food
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OpenStudy (anonymous):
Yes I know that, I meant maybe that's why you thought it was written weirdly :P