CALCULUS: 3.4 Derivative
Part A-regarding sum and difference of functions :
SELF EXAMINATION : Question 9
Q.9) If y = 3x . (i) prove that x(dy/dx) = 3y
(ii) find the value of
(i) y = 3x
dy/dx = 3
∴ x(dy/dx) = 3x = 3y
(i) y = 3x
dy/dx = 3
∴ x(dy/dx) = 3x = 3y