<Student’s name>
Abstract
It is known that the natural numbers arose when the score items. The human need to measure the size and the fact that the measurement result is not always expressed in a whole number, led to the expansion of the set of natural numbers. Were introduced zero and fractional numbers.
The process of historical development of the concept of numbers did not stop. It is not always the first impetus to the expansion of the concept of numbers were exceptionally practical needs of the people. And so it was that the problems of mathematics demanded extension of the concept of number. This was the case with the emergence of negative numbers. The solution to many problems, especially with the help of equations solved, leading to the subtraction of a smaller number of more. This necessitated the introduction of new numbers.
An Example of Negative Numbers in Real World
One of the most common examples of the use of negative numbers in real life is a balance on the payment card. Assume that this payment card has the overdraft within a certain limit. Positive account balance will mean that the customer's bank available own funds to pay for purchases. Negative balance in the account will show the amount of debt owed to the bank, which bear interest.
After a certain period of time (for example, at the end of the month), these percentages translate into a debt that must be repaid to the bank. Recharge card account in this case would entail an increase in the residue (i.e., the "reduction" of a negative number down to zero and then to positive values).
Negative numbers are of great use in the financial sector - they usually mean debts, loss of income, profits or impairment of negative growth.
Sources
Bourbaki, Nicolas (1998). Elements of the History of Mathematics. Berlin, Heidelberg, and New York: Springer-Verlag. ISBN 3-540-64767-8.
