28. Prove the following program is correct: {n > 0} count = n; 0; sum = while count <> 0 do sum = sum + count; count = count - 1; end {sum = 1 + 2 + . . + n}

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Max Function

Statistical function is of many categories. One of them is a MAX function. The MAX function returns the largest value from the list of arguments passed to it. MAX function always ignores the empty cells when performing the calculation.

Power Function

A power function is a type of single-term function. Its definition states that it is a variable containing a base value raised to a constant value acting as an exponent. This variable may also have a coefficient. For instance, the area of a circle can be given as: