Question

please write solution​

Answer 1

If any series is in AP, the inverse is in HP.

Suppose 1/a , 1/b and 1/c is in AP

Then prove that The other terms [in inverse] are in AP

Hence the equation is proved.

Converting to AP makes it easier to equate.

Hope this helps....☝☝☝☝

$BeBrainly$

Answer 2

Which class please tell me