overall accuracy: 85% accuracy last 50: 88% record: 42 score: 42 if f is positive then f is increasing…

overall accuracy: 85% accuracy last 50: 88% record: 42 score: 42 if f is positive then f is increasing cannot be determined positive concave up high score board: overall you must have at least 100 to be on the board. # name record answer submitting is not possible on this problem. just follow the instructions above.

overall accuracy: 85% accuracy last 50: 88% record: 42 score: 42 if f is positive then f is increasing cannot be determined positive concave up high score board: overall you must have at least 100 to be on the board. # name record answer submitting is not possible on this problem. just follow the instructions above.

Answer

Explanation:

Step1: Recall function - derivative relationship

The sign of a function $f(x)$ (positive or negative) has no direct relation to the sign or behavior of its derivative $f^{\prime}(x)$. For example, the function $f(x)=1$ is positive everywhere, and its derivative $f^{\prime}(x) = 0$. Another example is $f(x)=e^{-x}$ which is positive for all real - valued $x$, but its derivative $f^{\prime}(x)=-e^{-x}$ is negative. Also, the positive function $f(x)=x^{2}$ has a derivative $f^{\prime}(x) = 2x$ which is negative for $x<0$ and positive for $x > 0$.

Answer:

cannot be determined