10. If a4.65 = 1, then the value of logg (a3 b4) equals- 9 (1) (2) 4 (3) 5
Answers
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Step-by-step explanation:
We have, a
4
⋅b
5
=1
⇒b
5
=a
−4
⇒b=a
−4/5
∴log
a
(a
5
b
4
)=log
a
(a
5
⋅a
4(−4/5)
)
=log
a
(a
5−16/5
)=log
a
a
9/5
=
5
9
log
a
a=
5
9
,∵log
a
a=1
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