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If (-2,7) is the highest point on the gr...

If `(-2,7)` is the highest point on the graph of` y =-2x^2-4ax +lambda`, then `lambda` equals

A

31

B

11

C

`-1`

D

`-1//3`

Text Solution

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The correct Answer is:
C
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VIKAS GUPTA (BLACK BOOK)-QUADRATIC EQUATIONS -EXERCISE (SUBJECTIVE TYPE PROBLEMS)
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  2. Let f(x) = ax^2 + bx + c where a,b,c are integers. If sin\ pi/7 * sin\...

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  3. Let a, b, c, d be distinct integers such that the equation (x - a) (x ...

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  5. The number of positive integral values of m, m le 16 for which the equ...

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  11. The number of all values of n, (whre n is a whole number ) for which t...

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  12. The number of negative intergral values of m for which the expression ...

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  13. If the expression a x^4+b x^3-x^2+2x+3 has remainder 4x+3 when divided...

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  14. The smallest value of k, for which both the roots of the equation, x^2...

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  15. If (x^2- 3x + 2) is a factor of x^4-px^2+q=0, then the values of p...

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  16. The expression x^2 + 2xy + ky^2 + 2x + k = 0 can be resolved into two ...

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  17. The curve y=(lambda=1)x^2+2 intersects the curve y=lambdax+3 in exactl...

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  18. Find the number of integral vaues of 'a' for which the range of functi...

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  19. When x ^(100) is divided by x ^(2) -3x +2, the remainder is (2 ^(k +1)...

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  20. Let p (x) be a polynomial equation of least possible degree, with rati...

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  21. The range of values k for which the equation 2 cos ^(4)x-sin ^(4)x +k=...

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