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Use a linear approximation to estimate 4728.9 correct to four decimal places. Hint: f(x) = HI) = f(a) + f'(a)(x - a) a = 729 and x = 728.9 Formula for linear approximation L(xl -a) +f'(a)(x - a) L(x) is linear approximation {what you we nt to nd. fix} = given or we set up the fix) a = value of approximation [example estimate 2.012, a is 2. Find the value of each term in the formula. Answer substitute all the value above in formula and solve