, One way to avoid having to use too many grouping symbols (such as Oughtred\'s
ID: 2253212 • Letter: #
Question
, One way to avoid having to use too many grouping symbols (such as Oughtred's colons or the modern parentheses) is to agree on precedence rules that say that some operations happen first unless an explicit grouping symbol occurs. So, for example, 5 + 3 × 4 means 5 + (3 × 4) nd not (5+3) × 4 because multiplication always takes precedence over ddition. . What are the standard precedence rules for the usual operations in arithmetic? Calculators are typically quite strict in how they enforce precedence rules. Either by checking its manual or by doing some experiments, determine list of operations tion, division, taking powers. what precedence your calculator assigns to the following : changing sign, addition, subtraction, multiplica-Explanation / Answer
(a) According to standard precedence rules, expressions are evaluated in the following sequence:
(b) 1. changing sign
2. taking powers
3. multiplication, division
4. addition, subtraction
N.B. :An useful mnemonic, in the sense that it does actually aid the memory - "Please Excuse My Dear Aunt Sally", where the first letters of each word stand for Parentheses, Exponentiation, Multiplication, Division, Addition and Subtraction.
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