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TS EAMCET · Maths · Application of Derivatives

The equation of the tangent to the curve xy5+2x2y-x3+y+1=0 at x=0 is

  1. A 3x+4y+4=0
  2. B y=x-1
  3. C 5x+7y+7=0
  4. D x+y+1=0
Verified Solution

Answer & Solution

Correct Answer

(B) y=x-1

Step-by-step Solution

Detailed explanation

xy5+2x2y-x3+y+1=0         .....i Put x=0 0+0-0+y+1=0 ⇒y=-1 Differentiating curve w.r.t. x y5+5xy4dydx+2x2dydx+4xy-3x2+dydx=0 ⇒dydx0,-1=1 Tangent ≡y--1=1x-0 ⇒y=x-1
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