3. Referring to question 2 above, add the fourth point as follows X3 = 5 f(x3) = 1.609438 Estimate In 2 with a third order Newton's interpolating polynomial 3. Referring to question 2 above, add the fourth point as follows X3 = 5 f(x3) = 1.609438 Estimate In 2 with a third order Newton's interpolating polynomial