40. It is easy to check that f(x) = x² – 4x has two roots. Find these two roots using Newton's method In+1 = Xn - f(In)/f'(xn). (11) If you can find only one root, explain why? [Hint: First write the...

Extracted text: 40. It is easy to check that f(x) = x² – 4x has two roots. Find these two roots using Newton's method In+1 = Xn - f(In)/f'(xn). (11) If you can find only one root, explain why? [Hint: First write the Newton's iteration formula, then use different initial values xo = 1 and then ro = -1 to see if you can get two different roots.]