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Question

For which of the following graphs of the function y=ax2+bx+c, we will get a>0 & D<0.

A
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B
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C
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D
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Solution

The correct option is C
Given the equation: y=ax2+bx+c
Now, we have to find the function y=ax2+bx+c , for which a>0 & D<0.
Now, D<0 The equation have no real roots.
Thus, it won't intersect the x axis at any points.
The graph for which these conditions are satisfied are:

And

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