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Show that the curves 4x=y^2 and 4x y=k c...

Show that the curves `4x=y^2` and `4x y=k` cut at right angles, if `k^2=512` .

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RD SHARMA ENGLISH-TANGENTS AND NORMALS-All Questions
  1. Show that x^2=y and x^3+6y=7 intersect orthogonally at (1,\ 1)

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  2. Show that y^2=8x and 2x^2+y^2=10 at (1,\ 2sqrt(2))

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  3. Show that the curves 4x=y^2 and 4x y=k cut at right angles, if k^2=...

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  4. Show that the curves 2x=y^2 and 2x y=k cut at right angles, if k^2=...

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  5. Prove that the curves x y=4 and x^2+y^2=8 touch each other.

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  6. Prove that the curves y^2=4x and x^2+y^2-6x+1=0 touch each other at th...

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  7. Find the condition for the following set of curves to intersect ort...

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  8. Find the condition for the two concentric ellipses a1x^2+\ b1y^2=1\...

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  9. Show that the curves (x^2)/(a^2+lambda1)+(y^2)/(b^2+lambda1)=1 and (x^...

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  10. If the straight line xcosalpha+ysinalpha=p touches the curve (x^2)/(a^...

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  11. Find the point on the curve y=x^2-2x+3 , where the tangent is pa...

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  12. Find the slope of the tangent to the curve x=t^2+3t-8 , y=2t^2-2t-5...

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  13. If the tangent line at a point (x ,\ y) on the curve y=f(x) is para...

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  14. Write the value of (dy)/(dx) , if the normal to the curve y=f(x) at...

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  15. If the tangent to a curve at a point (x ,\ y) is equally inclined t...

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  16. If the tangent line at a point (x ,\ y) on the curve y=f(x) is para...

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  17. Find the slope of the normal at the point ' t ' on the curve x=1/t ...

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  18. Write the coordinates of the point on the curve y^2=x where the tan...

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  19. Write the angle made by the tangent to the curve x=e^tcost , y=e^tsi...

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  20. Write the equation of the normal to the curve y=x+sinxcosx at x=pi/...

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