f(x)= (37−2x)^1/2
find the domain of the given function
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OpenStudy (anonymous):
\(f(x)=\sqrt{37-2x}\) Is that it?
OpenStudy (anonymous):
Like is that the function?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
pls also tell how did you arrive at the answer.
OpenStudy (anonymous):
Ok. So then we know that \(\sqrt{0}=0\). But the "thing" inside the square root cannot be negative. So we have:
\[(37-2x) \geq 0\]
\[37 \geq 2x\]
\[\frac{37}{2} \geq x\]
Therefore, the domain is:
\[D=\Big[{x \in R} \phantom{.} \Big| \frac{37}{2} \geq x\Big]\]
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OpenStudy (anonymous):
hmm... lemme plug this answer in my homework. I have tried this question 5 times, hadn't got it right so far. Hope it works this time.
OpenStudy (anonymous):
I hope so too!
OpenStudy (anonymous):
Nope it says the answer is wrong.
OpenStudy (anonymous):
I had to write it in interval format so I wrote it as [37/2,infinity)
OpenStudy (anonymous):
Oh I see yeah that's another way of writing it:
\[D=\left[{x \in R} \phantom{.} \Big| x \in \left(-\infty,\frac{37}{2}\right]\right]\]
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