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If a chord of the circle x^2+y^2-4x-2y-c...

If a chord of the circle `x^2+y^2-4x-2y-c=0` is trisected at the points `(1/3,1/3)&(8/3,8/3)` , then `' c '` equal to: 10 (b) 20 (c) 40 (d) none of these

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RESONANCE DPP-JEE MAINS-All Questions
  1. Let log3^N = alpha1 + beta1 , log5^N = alpha2 + beta2 , log7^N = alph...

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  2. Consider curve y=f(x), then if PT = Length of tangent PN= Length of n...

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  3. If a chord of the circle x^2+y^2-4x-2y-c=0 is trisected at the points ...

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  4. If a x ^2+b x+c=0 has imaginary roots and a-b+c >0 then the set of p...

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  5. if the set of values of ' x ' satisfying the inequations ((x-1)^2(x+1)...

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  6. Evaluate: ("lim")(nvecoo)((a1 1/x+a2 1/x++a n1/x)/n)^(n x)

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  7. Let a ray of light leaves the point (3, 4) reflects from the y-axis an...

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  8. The equation of the bisector of that angle between the lines x+2y-11=0...

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  9. Sum of roots of the equation x^4-2x^2sin^2(pix/2)+1=0 is 0 (b) 2 ...

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  10. DeltaABC is formed by the lines 2x-3y-6=0, 3x-y+3=0 and 3x+4y-12=0. If...

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  11. If the tangent at a point P with parameter t, on the curve x=4t^2+3, y...

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  12. The lines 3x+4y=9&4x-3y+12=0 intersect at Pdot The first line intersec...

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  13. If f''(x)>0 and Q(x)=2f((x^2)/2)+f(6-x^2),AAx in R , then function Q(...

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  14. If sum of the roots of the quadratic equation, a x^2+b x+c=0 , then t...

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  15. If y= log 5 (log 7,x),then (dy)/(dx) =

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  16. The equation of the base of an equilateral triangle A B C is x+y=2 and...

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  17. The radius of a right circular cyliner increases at a constant rate. I...

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  18. If (x1-x2)^2+(y1-y2)^2=144 ,(x2-x3)^2+(y2-y3)^2=25 and (x3-x1)^2+(y3-y...

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  19. A circle with center in the first quadrant is tangent to y = x+10, y =...

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  20. If A , B , C , D are the angles of a quadrilateral, then (tanA+tanB+...

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