Let f(6) = sin(9) + \"3305(6). Calculate the derivative W) = : Calculate the second derivative f\"= l: List the first interval after 0 (and not including 0) on which f is increasing? List the first interval after 0 (and not including 0) on which f is decreasing? List the first interval after 0 (and not including 0) on which f is concave downward? List the first interval after 0 (and not including 0) on which f is concave upward