AP EAMCET Engineering 2011 Solved Paper

Section: Mathematics

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Question : 109 of 160

Marks: +1, -0

If a>0 and b2−4ac=0, then the curve y=ax2+bx+c

cuts the x -axis
touches the x -axis and lies below it
lies entirely above the x -axis
touches the x -axis and lies above it

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