14. At a certain instant, the value of x is 5, and the value of y is 7. A short time later, the value of x has increased to 5.03, and the value of y has increased to 7.06. What is the estimated dy/dx? (5marks)19. The energy,' stored in a certain capacitor obeys the formula E = 160%\"; where, V is the voltage difference across the leads, and C = 0.1?Jouleshrolt2_ the voltage across the leads as 2.6% an error of :Ovolts. What is the estimated error'? (5marks)