UPSC NDA Math Model Paper 3

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Question : 85 of 120

Marks: +1, -0

If a2+b2=7ab then the value of log(

a+b

3

) is:

1
2
‌log(a+b)
1
2
‌log(ab)
1
2
‌log(
a
b
)
1
2
‌log(
b
a
)

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