Question
Define what it means for a function $f$ with domain $\mathbb{R}$ to be (a) negative on an interval $I$ and (b) decreasing on an interval $L$.
Step 1
A function $f$ is said to be negative on an interval $I$ if for all $x$ in $I$, $f(x) < 0$. This means that the output of the function is less than zero for all inputs in the interval $I$. Show more…
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