Give me the steps not the answer please. How would i write log6 5 as a logarithm of base 4?
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OpenStudy (amistre64):
well, write it out first
log6 5 = log4 x
swap these into lns by the change of base
ln5 ln4
--- = ----
ln6 lnx
then rearrange to solve for x
OpenStudy (anonymous):
ok, yea, i dont get it
OpenStudy (amistre64):
have you heard of the change of base ?
OpenStudy (anonymous):
no
OpenStudy (amistre64):
hmm, well then we can work it the long way i spose ... maybe
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OpenStudy (anonymous):
ok
OpenStudy (amistre64):
hmm, there is no pretty little answer to it is there .....
OpenStudy (anonymous):
no, this is confusing
OpenStudy (amistre64):
\[log_6(5)=log_4(x)\]
\[\frac{ln5}{ln6}=\frac{lnx}{ln4}\]
\[\Large e^\left(ln4\frac{ln5}{ln6}=lnx\right)\]
\[\Large e^\left(ln4\frac{ln5}{ln6}\right)=x\]
\[\Large e^\left(ln4\frac{ln5}{ln6}\right)=x\]
which is another way of writing:\[\Large 4^{log_6(5)}\]
OpenStudy (anonymous):
this?
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OpenStudy (amistre64):
well, that would work as a change of base yes .... i spose we aint got to use the lns