Mathematics
9 Online
OpenStudy (anonymous):
@satellite73 @ganeshie8
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OpenStudy (shadowlegendx):
What is your question?
OpenStudy (anonymous):
Solve. \[\log_{4} \sqrt{8} =\]
OpenStudy (anonymous):
there is supposed to be an X after the equals sighn
OpenStudy (anonymous):
x is not important
this is asking 'what power do you raise 4 to, to give you 8
i.e. is asking "solve for \(x\), \(4^x=8\)
OpenStudy (anonymous):
oh square root of 8 sorry
\[4^x=\sqrt{8}\]
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OpenStudy (anonymous):
I got 2.82842712 for the square root of 8
OpenStudy (anonymous):
they want you to recognize both as powers of 2
\[4^x=2^{2x}\]
\[\sqrt{8}=\sqrt{2^3}=2^{\frac{3}{2}}\]
OpenStudy (anonymous):
this is not a calculator exercise
OpenStudy (anonymous):
\[\large 2^{2x}=2^{\frac{3}{2}}\iff 2x=\frac{3}{2}\]
OpenStudy (anonymous):
is that the answer
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OpenStudy (anonymous):
lol no you have to solve
\[\large 2x=\frac{3}{2}\] for \(x\)
OpenStudy (anonymous):
ok how?
OpenStudy (shadowlegendx):
I would multiply both sides by 2 to make them wholes
OpenStudy (shadowlegendx):
4x = 3
OpenStudy (anonymous):
if you wanted to use a calculator to solve this, you can
you type in
\[\log(\sqrt8)\div\log(4)\] and you will get it
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OpenStudy (shadowlegendx):
Oh, haha c;
OpenStudy (anonymous):
@ShadowLegendX no ! divide by 2 and get
\[x=\frac{3}{4}\]
OpenStudy (anonymous):
thank you soo much I appreciate it
OpenStudy (anonymous):
yw
OpenStudy (shadowlegendx):
Ok, good job @satellite73