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Suppose `xa n dy` are real numbers and that `x^2+9y^2-4x+6y+4=0` . Then the maximum value of `((4x-9y))/2` is__________

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CENGAGE ENGLISH-CONIC SECTIONS-All Questions
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  2. If two distinct tangents can be drawn from the Point (alpha,2) on diff...

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  3. Suppose xa n dy are real numbers and that x^2+9y^2-4x+6y+4=0 . Then th...

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  4. A hyperbola passes through (2,3) and has asymptotes 3x-4y+5=0 and 12 x...

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  5. Rectangle ABCD has area 200.An ellipse with area 200pi passes through ...

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  9. A point on the ellipse x^2+3y^2=37 where the normal is parallel to the...

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  10. Let P(a sectheta, btantheta) and Q(aseccphi , btanphi) (where theta+...

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  11. If a pair of variable straight lines x^2 + 4y^2+alpha xy =0 (where alp...

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  12. The line 2x + y = 1 is tangent to the hyperbola x^2/a^2-y^2/b^2=1. I...

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  15. If a ray of light incident along the line 3x+(5-4sqrt(2))y=15 gets ref...

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  16. If the sum of the slopes of the normal from a point P to the hyperbol...

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  17. If the tangent at the point P(theta) to the ellipse 16 x^2+11 y^2=256 ...

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  18. If the normal to the given hyperbola at the point (c t , c/t) meets th...

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  19. If the equation of the ellipse is 3x^2+2y^2+6x-8y+5=0 , then which o...

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