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AP EAMCET · Maths · Differentiation

If log1+x2-x=y1+x2, then 1+x2dydx+xy=

  1. A 0
  2. B 1
  3. C 2
  4. D -1
Verified Solution

Answer & Solution

Correct Answer

(D) -1

Step-by-step Solution

Detailed explanation

Given, log1+x2-x=y1+x2 Differentiating, both sides w.r.t x, ddxlog1+x2-x=ddxy1+x2 ⇒11+x2-xddx1+x2-x=1+x2dydx+yd1+x2dx ⇒11+x2-xx1+x2-1=1+x2dydx+xy1+x2 Multiplying by 1+x2 both the sides, ⇒1+x2×11+x2-xx1+x2-1=1+x2dydx+xy…
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