UPSC 2015 CDS I Math Paper

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Question : 40 of 100

Marks: +1, -0

The sign of the quadratic polynomial ax2+bx+c is always positive if

[2015 CDS-I]

a is positive and b2−4ac<0
a is positive and b2−4ac<0
a can be any real number and b2−4ac<0
a can be any real number and b2−4ac>0

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