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Question : 145 of 160
Marks:
+1,
-0
Solution:
Given,
‌=‌Applying componendo and dividendo, we get
‌‌=‌| (1+√y)+(1−√y) |
| (1+√y)−(1−√y) |
‌⇒‌‌‌=‌‌⇒‌‌y=(‌)2On differentiating w.r.t.
x, we get
‌‌=‌| −2(1+x)2(1−x)−(1−x)2⋅2(1+x) |
| (1+x)4 |
‌=‌| (1−x)(1+x)(−2−2x−2+2x) |
| (1+x)4 |
‌=‌
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