A weight suspended by a spring vibrates vertically according to the function D given byD(t)=2sin(4(t+18)), where D(t),in centimeters, is the directed distance of the weight from itscentral position t seconds after the start of the motion. Assume the positive direction is upward. What isthe instantaneous rate of change of the weight's position, in centimeters per second, at the moment theweight is first 1 centimeter above its central position?-21.765-12