CHAPTER 3 APPLICATION OF DIFFERENTIATION
syedpkb.files.wordpress.com › 2013 › 06express the rate of change of one in terms of the other. We need to differentiate both sides w.r.t. (with respect to) time d dt. If y f x u, then dy dy dx dt dx dt where dy dt and dx dt are the rates of change of y and x respectively. Example 1: If the radius of a circle increase at the rate of 1 1 5 cms , find the rate of area at the instant ...