The value of "e" is found in many mathematical formulas such as those describing a nonlinear increase or decrease such as growth or decay (including compound interest), the statistical "bell curve," the shape of a hanging cable or a standing arch.
"e" also shows up in some problems of probability, some counting problems, and even the study of the distribution of prime numbers.
If three or more periods occur before the end of a line, then MATLAB ignores the rest of the line and continues to the next line.
This effectively makes a comment out of anything on the current line that follows the three periods.
The percent sign is most commonly used to indicate nonexecutable text within the body of a program.
This text is normally used to include comments in your code.
The ∞ symbol signifies infinity, the concept that numbers go on for ever.
However large a number you have, you can always have a larger one, because you can always add one to it.
For example, 5 ± 2 could in practice be any number from 3 to 7.
The angle symbol ∠ is used as shorthand in geometry (the study of shapes) for describing an angle.