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4. (10 pts.) Exercise 0.4, computer problem 1a \& 1b : Calculate the expressions that follow in double precision arithmetic (using MATLAB) for x=101,,1014. Then, using and alternative form of the expression that doesn't suffer from subtracting nearly equal numbers, repeat the calculation and make a table of the results. Report the number of correct digits in the original expression for each x. (a) tan2(x)1sec(x) (b) x1(1x)3