Reply to Re: I gave up to the Computers National Olympiad
If you don't have an account, just leave the password field blank.
You can have 2 apples, but you can't hold -2 apples!! And what if you multiply two negative numbers together, like -2 * -2. That equals a positive 4? That isn't rational!
You can't hold 2 apples, but you can owe somebody 2 apples(-2). If two people owes you two apples each( (-2)*(-2)=4 ), that means you'll have 4 apples.
Negative numbers are useful just as imaginary numbers are useful.
Let's take electricity for example. There can be pozitive or negative charges of electricity. That's a pretty usefull application of negative numbers.
It is said that the only part of math that has no practical applications yet is the numbers theory(prime numbers and such).
You can't hold 2 apples, but you can owe somebody 2 apples(-2). If two people owes you two apples each( (-2)*(-2)=4 ), that means you'll have 4 apples.
Negative numbers are useful just as imaginary numbers are useful.
Let's take electricity for example. There can be pozitive or negative charges of electricity. That's a pretty usefull application of negative numbers.
It is said that the only part of math that has no practical applications yet is the numbers theory(prime numbers and such).
