Question: 4. [4 marks] Let F be a floating-point number system with machine epsilon E, and suppose that a, b and c are all elements of

4. [4 marks] Let F be a floating-point number system with

4. [4 marks] Let F be a floating-point number system with machine epsilon E, and suppose that a, b and c are all elements of F. Show that the relative error for the expression ab+c has the upper bound (a bec- (ab+c) ab

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