A) \[a\ge 0\]
B) \[a=0\]
C) \[a<0\]
D) \[a>0\]
Correct Answer: C
Solution :
| If \[a<0\] in \[f(x)=a{{x}^{2}}+bx+c,\] the parabola opens downward. |
| In this case the vertex is the maximum, or the highest point of the parabola. Again, a large negative value of a makes the parabola narrow. A value close to zero makes it wide. |
| So, option [c] is correct. |
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