We know that - = 1.
When we substitute = ,
then, - = - = 0.
Then how is it that the above identity is applicable for all possible values for , as is mentioned in many textbooks?
Asked by bjayanta | 22nd Jul, 2015, 09:54: PM
Answered by Vimala Ramamurthy | 23rd Jul, 2015, 10:40: AM
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