Which function is positive for the entire interval [-3, -2]?

Mathematics

1 answer:

Aleksandr-060686 [28]2 years ago

4 0

Answer:

Answer: A function that is positive in the entire interval [-3, -2] is -x2 - 5x - 5. Let's understand the solution. Explanation: If the function is represented by a downward parabola, then the function must be quadratic and the coefficient of x2 must be negative.

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dalvyx [7]

So,

All we have to do is multiply all three dimensions together.

First, convert all fractions into improper fractions.

$3 \frac{1}{5}--\ \textgreater \ \frac{16}{5}$

$1 \frac{3}{4} --\ \textgreater \ \frac{7}{4}$

$2 \frac{1}{4} --\ \textgreater \ \frac{9}{4}$

Now multiply the fractions together.

<span> $\frac{16}{5}*\frac{7}{4}*\frac{9}{4}= \frac{2*2*2*2*3*3*7}{2*2*2*2*5}$
</span>
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