Difference between revisions of "Sum"
(New page: A '''sum''' is when a few groups of things are put all together. For example, there is one group of 2 carrots, one group of 3 carrots, and one group of 4 carrots. We sum them by grouping a...) |
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| − | A '''sum''' is when a few groups of things are put all together. For example, there is one group of 2 carrots, one group of 3 carrots, and one group of 4 carrots. We sum them by | + | A '''sum''' is when a few groups of things are put all together. For example, there is one group of 2 carrots, one group of 3 carrots, and one group of 4 carrots. We sum them by sliding the groups all together, counting, and finding that there are 9 carrots all together. Thus the sum of 2 carrots, 3 carrots, and 4 carrots is 9 carrots. And those carrots can be replaced with anything; calculators, pencils, maple trees, planets, alternate realities, anything. |
| + | A sum is also the result of the operation [[addition]] | ||
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| + | We denote the sum function by <math>+</math>. Thus if we wanted to denote a sum of two carrots, three carrots, and four carrots mathematically, we would write <math>2+3+4=9</math>. To represent the sum of a lot of numbers, we use [[Sigma notation]]. | ||
[[Category:Definition]] | [[Category:Definition]] | ||
{{stub}} | {{stub}} | ||
Latest revision as of 16:35, 7 September 2024
A sum is when a few groups of things are put all together. For example, there is one group of 2 carrots, one group of 3 carrots, and one group of 4 carrots. We sum them by sliding the groups all together, counting, and finding that there are 9 carrots all together. Thus the sum of 2 carrots, 3 carrots, and 4 carrots is 9 carrots. And those carrots can be replaced with anything; calculators, pencils, maple trees, planets, alternate realities, anything. A sum is also the result of the operation addition
We denote the sum function by 
. Thus if we wanted to denote a sum of two carrots, three carrots, and four carrots mathematically, we would write 
. To represent the sum of a lot of numbers, we use Sigma notation.
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