Math, asked by dee0123, 10 months ago

2nd question answer please

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Answered by sruthi460

0

The answer is c)2ab/a+b.

dee0123: how?

sruthi460: Its given in my Maths Text book

dee0123: page number bro

dee0123: or sister

sruthi460: Pg no:126.

Answered by ranjankumar19956

0

I think option (c) is correct

The harmonic mean between a and b is

H = 2/(1/a+1/b)

On proceeding it will be equal to

H = 2ab/(a+b)

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