Il M²+ n² = 15mn then show that 12
12 log(m+n) log2 + 11 + logm+ logn
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logmlog(
n
m
2
)log(
n
2
m
3
)..... are in A.P
d=log
n
m
2
−logm=log
n
m
2
×
m
1
=log
n
m
t
r
=a+(r−1)d=logm+(r−1)log
n
m
=logm+log(
n
m
)
r−1
=logm.
n
r−1
m
r−1
=log(
n
r−1
m
r
)
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