Use a computer algebra system to verify the results in Examples 1.2.7 and 1.2.9.
Examples 1.2.7
Design and carry out an experiment to check the computation of x y on your computer.
Hint: Compare the computations of some examples, such as 322.5 and 811.25, to their correct values. A more elaborate test can be made by comparing singleprecision results to double-precision results in various cases.
Examples 1.2.9.
(Continuation) For cos(x − y) = (cos x)(cos y) + (sin x)(sin y) repeat the preceding computer problem.
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