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The point on the ellips 9x^(2) +16y^(2)=...

The point on the ellips `9x^(2) +16y^(2)=400` at which the abscissa and ordinate decrease at the same rate is

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9x^(2)+24xy+16y^(2)

A DAS GUPTA-Application of dy/dx-Exercise
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  14. If the line a x+b y+c=0 is a normal to the curve x y=1, then a >0,b >...

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  15. The angle between the curves y = sinx and y = cosx is

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  16. The point on the ellips 9x^(2) +16y^(2)=400 at which the abscissa and ...

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  17. IF slope of tangent to curve y=x^3 at a point is equal to ordinate of ...

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  18. Find the equations of the tangent and the normal to the curve x=3co...

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