Let f(0) = sin(0) + 3 cos(0). Calculate the derivative f'(0) = Calculate the second derivative f''(0) = List the first interval after 0 (and not including 0) on which f is increasing? Increasing: List the first interval after 0 (and not including 0) on which f is decreasing? Decreasing: List the first interval after 0 (and not including 0) on which f is concave downward? Concave Down: List the first interval after 0 (and not including 0) on which f is concave upward? Concave Up: