Up your bum.
There are different rules for different operations.
tang ina
There are many. There are those that deal with the four basic binary operations, then there are rules governing exponents and logarithms.
There are many. There are those that deal with the four basic binary operations, then there are rules governing exponents and logarithms.
When people started classifying numbers in different ways Some numbers were grouped together and called Real numbers. Solutions that would create Imaginary numbers were simply explained away as impossible, later the rules for working with these numbers, but, even though they are not considered Real numbers some math operations will create Real number answers.
Rules: Unlike SignsSubtract the absolute value of the number and copy the sign of the number with greater absolute value.
Richard Dedekind came up the concept of Dedekind cuts, which have since become the standard definition of real numbers. A Dedekind cut for a real number x is the subset of all numbers such that are smaller than or equal to x.
The set of real numbers is closed under addition, subtraction, multiplication, and division (except that you cannot divide by zero). By closed, this means that if the two numbers in the operation are both real numbers, the result of the operation will always be a real number. Dividing by zero is undefined (for all practical purposes)
rules of operation sign of numbers
Yes, all natural numbers are real numbers. Natural numbers are a subset of real numbers, so not all real numbers are natural numbers.
No, not all numbers are real numbers. Real numbers include all rational and irrational numbers, but there are also complex numbers that are not considered real numbers.
Imaginary numbers are not real numbers.