Question

# If $$a < 0$$, then function $$f(x)=ax^2+bx+c$$ has

A
minimum value.
B
constant value.
C
maximum value.
D
positive value.

Solution

## The correct option is D maximum value.When $$a<0$$ , $$f(x)$$ has maximum value because as we increase the value of $$x$$ the value of $$f(x)$$ keeps on decreasing as shownMaths

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