9. [0.15/0.3 Points] Let f(x) = 15x2/3 (a) Find the derivative of the function f. (Simplify your answer completely.) _-_

[answerhappygod]

9 0 15 0 3 Points Let F X 15x2 3 A Find The Derivative Of The Function F Simplify Your Answer Completely 1 (48.71 KiB) Viewed 80 times

9. [0.15/0.3 Points] Let f(x) = 15x2/3 (a) Find the derivative of the function f. (Simplify your answer completely.) _-_-( 13 ) (b) f'(x) = DETAILS 10x The domain of fis State the domain off and the domain of f'. (Enter your answer using interval notation.) The domain of f'is X = domain of f.) Submit Answer PREVIOUS ANSWERS (c) Determine the value(s) of x in the domain of f, if any, at which the function is not differentiable. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) . (Hint: find the value(s) of x where f' is not defined, then check if the value(s) of x is in the MY NOTES DETAILS ASK YOUR TEACHER 10. [-/0.3 Points] The number of tablets and smartphones in use in a certain country (in millions) in year t from 2010 through 2015 is approximately f(t) = 1.77t¹.3 (1 ≤ t ≤6) where t is measured in years, with t = 1 corresponding to 2010. MY NOTES ASK YOUR TEACHER (a) How many tablets and smartphones were in use in 2011? (Round your answers to one decimal place.) million (b) How fast was the number of tablets and smartphones changing in 2011? (Round your answers to one decimal place.) million/year