Mathematics
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OpenStudy (anonymous):
Find the value of log√7^1.
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OpenStudy (anonymous):
\[\sqrt{7}^1\]
OpenStudy (jhannybean):
\[\log_{10} (\sqrt{7})^{1}\]?
OpenStudy (anonymous):
I'm not completely sure. Thats all the directions say on my homework.
OpenStudy (jhannybean):
Is the base 10? Because if a value is not given the base of logs is usually 10.
OpenStudy (anonymous):
It does not say.
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OpenStudy (camper4834):
wait wait
OpenStudy (camper4834):
\[\log_{\sqrt{7}}1 \]
OpenStudy (camper4834):
does it look like that?
OpenStudy (jhannybean):
Well, let's see... \(\sqrt{7} = 7^{1/2}\)
OpenStudy (anonymous):
Yes!
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OpenStudy (camper4834):
OOOOKAY its base sqrt(7)
OpenStudy (anonymous):
i bet $2 that that is the question
OpenStudy (anonymous):
it looks exactly like camper4834 said.
OpenStudy (jhannybean):
So this could be written as \[\log(7^{1/2})\]
OpenStudy (anonymous):
makes no difference at all what the base is
\[\log_b(1)=0\] since
\[b^0=1\] always
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OpenStudy (camper4834):
\[\sqrt{7}^x = 1\]
OpenStudy (jhannybean):
Oh. in that case \[\log_{\sqrt{7}} 1 = x\] Now you're asking yourself \(\sqrt{7}^x =1\)
OpenStudy (jhannybean):
so.. \(\sqrt{7} = 7^{1/2 \cdot x}\)
OpenStudy (anonymous):
So 7^1/2x is the answer?
OpenStudy (jhannybean):
Nope.
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OpenStudy (anonymous):
Okay can you help me get to the next step?
OpenStudy (anonymous):
at the risk of repeating myself
\[\huge \log_b(1)=0\] always
OpenStudy (anonymous):
because irrespective of the base,
\[b^0=1\]
OpenStudy (camper4834):
Bcolllins listen to satellite
OpenStudy (camper4834):
what he is saying is that the answer is ZERO
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OpenStudy (anonymous):
that isn't the answer.
OpenStudy (jhannybean):
Oh, I guess I made it too complicated. <.<
OpenStudy (anonymous):
0 is not the answer.
OpenStudy (anonymous):
Nevermind. Thank you so much satellite!
OpenStudy (anonymous):
\[\log_{\sqrt{7}}(1)=0\]for sure, maybe i did not understand the question
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OpenStudy (anonymous):
Yes, it is the answer, I had typed a space and then a 0 and it was counting it wrong. Thank you so much!!
OpenStudy (jhannybean):
Ah, then I was just confused. I was thinking something along the lines of....
OpenStudy (anonymous):
Would either of ya'll know how to do........ evaluate ln e^6 without a calculator?
OpenStudy (jhannybean):
\[\log_{\sqrt{7}} 1=x\]\[\sqrt{7}^x = 1\]\[7^{(1/2)x} = 1\]\[\log_{7} 7^{(1/2)x} = \log_{7} 1\] Which would just get way too messy and complicated.
OpenStudy (jhannybean):
That's what I thought it was at first, I had just read the question wrong. sorry :')