Basic Definitions Relating to Operations
- Operations are actions or procedures which produce a resulting value from one or more input values.
- Binary operations involve two quantities and include addition, subtraction, multiplication, division and exponentiation.
- Unary operations only involve one quantity such as negation, absolute value or trigonometric functions.
- Fundamental operations of Algebra are addition, subtraction, multiplication and division.
- Addition is an operation indicated with + sign.
The result of addition of two or more numbers (addends)is called their Sum
- Subtraction is an operation indicated with a - sign.
The result of a subtraction is called the difference.
- Multiplication is an operation with * or dot or X or variables can simply be written together.
The cross (X) is not normally used with literal numbers because it can be confused with the variable x.
5xy means 5 times x times y and is read 5 x, y.
The result of a multiplication is called the product and the numbers that are multiplied together are the factors.
- Division is an operation indicated by viniculum, slash or an obelus (÷)
which is also know as a division sign. To divide x by y, where y is not zero, means
to find a number z such that x = yz. x is called the dividend, y is called the divisor and
z is called the quotient.
- A Power is an operation indicated by a superscipt.
- A Root is an operation indicated by the radical sign with a viniculum over the radicand.