how we can say if two numbers are equals?...
a friend told me than if a=b, then 0<|a-b|<E*. So, if we gues than a is not iqual b, then |a-b| is not equal 0. ok... the geat an E=|a-b|/2...the definition say 0<|a-b|<E=|a-b|/2. and that's not true. so a=b.
2,9999...->3
=>3-2,99...->0
the...