NCERT Class 12-Mathematics: Chapter –5 Continuity and Differentiability Part 19

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Question 62:

If , prove that



Hence Proved

Question 63:

If , prove that .


We have,

On putting and , we get

On differentiating both sides we get

Hence proved

Question 64:

If in terms of alone.



On differentiating Eq. (i) with respect to x, we get

Now, again differentiating the above with respect to , we get

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