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OpenStudy (anonymous):
@waterineyes
OpenStudy (anonymous):
Where??
OpenStudy (anonymous):
\[\sqrt{x^{2}-7x+12}\]
OpenStudy (anonymous):
Find the range?
OpenStudy (anonymous):
Are you sure you want to find its range and not domain???
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OpenStudy (anonymous):
the domain?
OpenStudy (anonymous):
can u explain what domain and range is?
OpenStudy (anonymous):
I can here explain you about the domain only..
OpenStudy (anonymous):
See your expression is:
\[f(x) = \sqrt{x^2 - 7x + 12}\]
For domain :
You should know the values inside the root cannot be 0 instead greater than or equal to zero..
So,
\[x^2 - 7x + 12 \ge 0\]
Can you factorize it??
OpenStudy (anonymous):
Sorry cannot be negative..
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OpenStudy (anonymous):
(x-3)(x-4)
OpenStudy (anonymous):
Yes so you got:"
\[(x-3)(x-4) \ge 0\]
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
So you will get:
\[x \le 3\]
And:
\[x \ge 4\]
OpenStudy (anonymous):
hw did u do that ? i need steps
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OpenStudy (anonymous):
Well I also don't know about this..
Ha ha ha..
OpenStudy (anonymous):
i think we have to do it logically right..no equations involved, only that the root cannot be negative
OpenStudy (anonymous):
Do you know the graph of Quadratic function...??
OpenStudy (anonymous):
i hve learnt it..
OpenStudy (anonymous):
cuts y axis at x =3 and x = 4
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