Question

Question 8 [9;6]
Let f(x) = 1/3x^3 + x^2 – 15x – 9. Use detailed sign tables in answering the
following questions,
(a) Find the intervals in which f is increasing or decreasing,
(b) Find the intervals in which the graph of y = f(x) is concave upwards or
downwards.
Question 9 [8]
Consider the function f(x) = e^rx . Determine the values of r so that f
satisfies the equation f"(x) + f'(x) - 6f(x) = 0.​

Answer 1

Answer:

sorry bro i don't know and want point

Step-by-step explanation:

if any one know this

expansion of (2x+3/x-1)^2

please tell me

Answer 2

Answer:

what time is your flight was cancelled and the rest of the day and beyond for the above position to help with the kids and I are going to the store and get you a copy I think I will