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The list below has some of the most common symbols in mathematics. However, these symbols can have other meanings in different contexts other than math. If x=y, x and y represent the same value or thing. If x≈y, x and y are almost equal. If x≠y, x and y do not represent the same value or thing. If x<y, x is less than y.
strict inequality. less than. 4 < 5. 4 is less than 5. ≥. inequality. greater than or equal to. 5 ≥ 4, x ≥ y means x is greater than or equal to y.
3+7 = 10: −: subtract: 5−2 = 3: ×: multiply: 4×3 = 12: ÷: divide: 20÷5 = 4 / divide: 20/5 = 4 ( ) grouping symbols: 2(a−3) [ ] grouping symbols: 2[ a−3(b+c) ] { } set symbols {1, 2, 3} π: pi: A = π r 2: ∞: infinity: ∞ is endless = equals: 1+1 = 2: ≈: approximately equal to: π ≈ 3.14: ≠: not equal to: π ≠ 2 < ≤ ...
- Less Than and Greater Than
- Or Equal to ...
- Why Use them?
- Changing Sides
- An Example Using Algebra
The "less than" sign and the "greater than" sign look like a "V" on its side, don't they? To remember which way around the "<" and ">" signs go, just remember: 1. BIG > small 2. small < BIG Greater Than Symbol: BIG > small
Sometimes we know a value is smaller, but may also be equal to! To show this, we add an extra line at the bottom of the "less than" or "greater than" symbol like this:
Because there are things we do not know exactly ... So we have ways of saying what we doknow (which may be useful!)
We saw in that previous example that when we change sides we flipped the symbol as well. Here is another example using "≥" and "≤":
OK, this example may be complicated if you don't know Algebra, but I thought you might like to see it anyway:
Replacing numbers and operations with symbols helps: “2 + 3 is equal to 5”. But we can do better. In 1557, Robert Recorde invented the equals sign, written with two parallel lines (=), because “noe 2 thynges, can be moare equalle”. “2 + 3 = 5” is much easier to read. Unfortuantely, the meaning of “equals” changes with the ...
The = symbol is employed to indicate that two quantities or expressions are identical, meaning they represent the same value. Its use permeates almost every facet of mathematics, from basic arithmetic to advanced equations in higher mathematics. Examples. Example 1: In basic arithmetic: \( 2 + 3 = 5 \)
People also ask
Is 2 + 3 equal to 5?
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In mathematics and logic, the “and” symbol is represented by ∧ and the “or” symbol by ∨. Here’s a simple example using these symbols: Example 1: Statement: “It is raining and cold.”. Mathematical Expression: Let statement p represent “It is raining” and q represent “It is cold.”. The expression becomes p∧q.
