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Let f(x)=a x^2+b x+c ,if f(-1)lt1,f(1)g...

Let `f(x)=a x^2+b x+c `,if `f(-1)lt1,f(1)gt-1,f(3)lt-4` and `a!=0` then

A

`a gt 0`

B

`a lt 1`

C

`a lt - 1//8`

D

none of these

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The correct Answer is:
C
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