11sir answer to yeh diya hua hai
but didn't understood it
Q
17. The locus of the vertices of the family of parabolas y=a3x2/3+ a2x- 2a is
(1) xy= 105/64
(2) xy= 3/4
(3) xy= 35/16
(4) xy=64/105
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10 Answers
6217. The locus of the vertices of the family of parabolas y=a3x2/3+ a2x- 2a is
(1) xy= 105/64
(2) xy= 3/4
(3) xy= 35/16
(4) xy=64/105
y=a3x2/3+ a2x- 2a
The vertex will be the point where dy/dx = 0 (Think of it as a parabola)
2a3x/3+ a2 = 0
so x=-3/2a
there, y= ax3/4 - ax3/2 -2a = -11/4 a
thus, xy=33/8 should be the answer
11dude i am not saying that sir and u r wrong
but ur answer is not even in the options
then wat to do?
1i am saying that soln u gvn is wrong
there r some ques like this its very few
