Parabola

Set of all positive values of a for which distance of vertex of y=2x2+ax+1 from x-axis is less than distance of vertex of y=-4x2+x+a from x-axis,is

4 Answers

11
Joydoot ghatak ·

whats the answer vinay???
i am getting a very bad one.. :(

1
Vinay Arya ·

The answer is((47/2)1/2-4,4+72).

11
Joydoot ghatak ·

(x+a/4)2 =1/2 [y - (1-a2/8)]
and
(x-1/8)2 = -1/4[y - (a+1/16)]

then from the questn..

1 - a28 < a + 116.
and

a > 0.

evaluate a.

1
Vinay Arya ·

Thank you very much.

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