NCERT Class 12-Mathematics: Chapter – 5 Continuity and Differentiability Part 18 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 59:

If prove that

Given:

Taking log on both the sides, we get

Or

On differentiating above with respect to , we get

Hence Proved

Question 60:

If , prove that

Given:

Taking log on both the sides, we get

On differentiating both the sides with respect to , we get

Hence Proved

Question 61:

If show that