Q9,10,11,12

Find all relative extrema of the function. Use the Second Derivative Test where applicable. (If an answer does not exist, enter DNE.) R(x) = x+ 3x -5 relative maximum (x, y)= relative minimum (x , y ) : Submit Answer 10. [-/8 Points] DETAILS LARCALC11 3.4.502.XP. Determine the open intervals on which the graph is concave upward or concave downward. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) = -x' + 12x - 3 concave upward concave downward Submit Answer 11. [-/9 Points] DETAILS LARCALC11 3.4.504.XP. Find the point of inflection of the graph of the function. (If an answer does not exist, enter DNE.) Rx) = 6x3- 9x2- 10x + 3 (x, y ) = ( Discuss the concavity of the graph of the function. (Enter your answers using interval notation.) concave upward concave downward Submit Answer 12. [-/8 Points] DETAILS LARCALC11 3.4.JIT.001. Find the derivative of the function. R(t) = 5+23 _ 5+1/3 + 8 F '(t ) =