|+ |0 |
|If a and b are both positive, then a + b = |a| + |b| |3 + 7 = 10 |
|If a and b are both negative, then a + b = -(|a| + |b|) |-6 + (-2) = -(6 + 2) = -8 |
|If a is positive and b is negative and a has the greater absolute value, |8 + (-5) = 8 - 5 = 3 |
|then a + b = |a| - |b| | |
|If a is positive and b is negative and b has the greater absolute value, |4 + (-9) = -(9 - 4) = -5 |
|then a + b = -(|b| - |a|) | |
|If a and b are opposites, then a + b = 0 |2 + (-2) = 0 |
Math Symbols
|[pic] |positive, plus, add | |[pic] |angle |
|[pic] |negative, minus, subtract | |[pic] |perpendicular |
| × |times, multiply | |[pic] |degree(s) |
| ÷ |divide | |[pic] |triangle |
|= |is equal to | |[pic] |is approximately equal to |
|[pic] |is not equal to | |[pic] |is similar to |
|< |is less than | |[pic] |is parallel to |
|> |is greater than | |[pic] |infinity |
|[pic] |is less than or equal to | |[pic] |pi, 3.14159 |
|[pic] |is greater than or equal to | |[pic] |is congruent to |
|( ) |Parentheses (grouping symbol) | |[pic] |therefore |
|[ ] |Brackets...
No comments