Derivative - Instantaneous rate of change. The rate of change of A The rate of change of B = d A d B " data-ke-type="html">HTML 삽입미리보기할 수 없는 소스 - The left : the slope is 2, that is, dy/dx=2. The rate of change is always constant. This means that the amount of change in y is twice the amount of change in x. In othe..