The Total solution for NCERT class 6-12
(i) By using product rule.
(ii) By expanding the product toobtain a single polynomial.
(iii By logarithmicdifferentiation.
Do they all give the same answer?
(i)
(ii)
(iii)
Taking logarithm on both thesides, we obtain
Differentiating both sides withrespect to x, we obtain
From the above three observations, it can be concludedthat all the results of are same.