Question

Where this formula comes from
\[\LARGE H.M.=\frac{2ab}{a+b}\]

Answer 1

Math book.

Answer 2

@FoolForMath he didnt mean math :P

Answer 3

notebook

Answer 4

Do you know what is H.M?

Answer 5

harmonic something.... @AravindG don't play games, if you want to tell me , do it. If you don't , don't stop dragging me down... I'll close this and that's it.

Answer 6

harmonic mean?

Answer 7

Read about harmonic means.

Answer 8

ok. thanks for nothing... (I wasn't about to post this one, but "someone" said that he'll explain to me where this comes from, and as much as I see, he's not.)

Answer 9

@kreshnik the avg speed is \[\huge A.S=.\frac{v_1t_1+v_2t_2}{t_1+t_2}\]

Answer 10

Why are you being impolite?

Answer 11

I'm not being

Answer 12

@FoolForMath i was trying to help him with physics where when distances are equal the average speed is harmonic mean ,,bt he has proved that he dont require it by his impolite behaviour

Answer 13

and when the time is constant the average speed is given by arithmetic mean .

Answer 14

:) i am leaving see ya fool

Answer 15

I'm leaving too.