The temperature at a point (x,y) is T(x,y), measured in degrees Celsius. A bug crawls so that its position after t seconds is given by = ((1+t)^(1/2), 2 + (t/3)) where x and y are measured in centimeters. The temperature function T(x,y) satisfies T_x(2,3) = 4 and T_y(2,3) = 3. How fast is the temperature rising on the bug's path after t=3 seconds?