A certain function is decreasing and concave down, f'(3) = 2, f(3) = 4. Which of the following is true?
a. f is increasing and concave down, f'(3) = 2, f(3) = 4. Which of the following is correct?
b. a certain function is decreasing and concave up, f'(3) = 2, f(3) = 4. Which of the following statement is false?
c. a certain function is increasing and concave down, f'(3) = 2, f(3) = 4. What can be concluded from this information?