Step Differentiation

p {margin: 0; padding: 0;} Date . 2 2 : Put the points (A.B) on Step a curve 3 Step 3 : Rename A and B y - flx) y B (xth, E (x+h)) A (x,flr) x distance 'h' 4 Step 4 : Move B closer and closer to A until they become ONE point. i.e. 'h' becomes zero (LIMITING VALUE) ( The gradient you get is the gradient at A) The rule is Differentiation by first principles f'x = Cim ((xth) - f(x) hao h Note Because this B really annoying only use is when it is requested in the question.