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प्रश्न
In Q. No. 15, write the sign of c.
उत्तर
The parabola `y = ax^2 + bx + c` cuts y-axis at P which lies on OY.
Putting x = 0 in `y = ax^2 + bx + c` , we get y=c. So the coordinates of P are (0,c). Clearly, P lies on OY. Therefore C < 0.
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