Produce graphs of f that reveal all the important aspects of the curve Then use calculus to find the following Enter your answers using interval notation Round your answers to two decimal pla f x 8 sin x x 5 x 3 Find the interval s of increase Find the interval s of decrease Find the inflection points of the function smaller x value larger x value x y x y Find the interval s where the function is concave up Find the interval s where the function is concave down