10/3/ 22 Related Rates P= Power P = K Battery ( R + re ) 2 If re s k fixed R 1 \\ R = 10 and dR = 50052 dR = error in measurement 1.5 k - OR - What is ap ? = change in resistance as time goes on Use Calculus 10k 2500 Schematic 2 In - Class (2) what value of R will maximize P ? 3) For k, re constant, what R will max P ? 2 0 = k R ( R + re ) 2