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The length of the normal to the curve y=...

The length of the normal to the curve `y=x^2+1` at (1, 2) is

A

`sqrt(5)`

B

`2sqrt(5)`

C

1

D

4

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-APPLICATIONS OF DIFFERENTIATION-EXERCISE 1B (TANGENT AND NORMAL)
  1. The length of the tangent of the curve 2x^2+3xy-2y^2=8 at (2, 3) is

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  2. The length of the tangent of the curve x=acos^3theta,y=asin^3theta(a>0...

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  3. The length of the normal to the curve y=x^2+1 at (1, 2) is

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  4. The length of the normal to the curve y=c cos ((hx)/c) at any point is

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  5. The length of the normal to the curve y^2=x^3/(2a-x) at (a,a) is

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  6. The length of the normal of the curve 2x^2+3xy-2y^2=8 at (2, 3) is

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  7. The length of the normal to the curves x=acos^3theta,y=asin^3theta(agt...

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  8. The length of the normal at pon the curve x=a(t+sint),y=a(1-cost) is

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  9. The length of the normal to the curve y=a((e^(-x//a)+e^(x//a))/2) at a...

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  10. The length of subtangent to y=be^(x//a) at any point is

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  11. The length of the subtangent at any point (x1,y1) on the curve y=5^x i...

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  12. The length of subtangent to sqrt(x)+sqrt(y)=3 at (4, 1) is

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  13. The length of subtangent to x^2y^2=a^4 at (a,a) is

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  14. The length of subtangent to x^2+xy+y^2=7 at (1, -3) is

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  15. The length of subtangent to y=xsinx at x=pi//2 is

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  16. The length of the subtangent to the curve y^2=x^2/(2a-x) at (a,a) is

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  17. The length of the subtangent of the curve 2x^2+3xy-2y^2=8 at (2, 3) is

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  18. The length of subtangent to x=a(theta+sintheta),y=a(1-costheta) at the...

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  19. The length of the subtangent of the curve x=acos^3theta,y=asin^3theta(...

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  20. For the parabola y^2=4ax, the ratio of the subtangent to the abscissa ...

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