Q96 / 160 · TS EAMCET 2022 (18 Jul Shift 2) · Mathematics

The vertex and the focus of the parabola 2x2+5y-6x+1=0 respectively, are

  • A
    -32,710,-32,5340
  • B
    -32,710,-32,340
  • C
    32,710,32,5340
  • Correct answer
    D
    32,710,32,340

Solution

Given:

2x2+5y-6x+1=0

⇒x2-3x+12=-52y

⇒x2-3x+94+12-94=-52y

⇒x-322=-104y+74

⇒x-322=-104y-710

⇒x-322=-52y-710

⇒x-322=-4×58×y-710

Vertex is 32,710.

Focus of the parabola X2=-4AY is X=0,Y=-A

So, y-710=-58⇒y=340

Hence, focus of given parabola is

32,340.

Hence, the correct answer is option: 'D'.

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