6. -/4 points LARCALC11 3.4.030. Find the points of inflection of the graph of the function. (If an answer does not exist, enter DNE.) RX) - 4 sin x + 4 cos x, [0,2%) (x, y) - ) (smaller X-value) (x, y) - (L (larger x-value) Describe the concavity. (Enter your answers using interval notation.) concave upward concave downward Need Help? Read It Talk to a Tutor -14 points LARCALC11 3.4.032. Find the point of inflection of the graph of the function. (If an answer does not exist, enter DNE.) f(x) = x + 8 cos x, [0, 27] (x,y) = (smaller x-value) (x, y) = ( (larger x-value) Describe the concavity. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) concave upward concave downward