Matematika sebagai Ilmu Deduktif


MATHEMATICS AS A DEDUCTIVE SCIENCE
In process of mathematics must be deductive not be inductive. Although in helping the beginner learners of mathematics is often required some examples to make them understand about the subject. When looking for the truth of the mathematics, it is contrast to seek the truth from the other sciences. For example, in natural science. The methods that are used to prove the truth of mathematics is a deductive science, so it can be concluded that the mathematics is not obtained by conducting experiments.
In several occasions, to seek the truth of mathematics can be started by inductive but for the next step the truth must be proven deductively. The mathematics theormscan not be accepted before proving it deductively.
For example :
The sum of two odd numbers is an even number.
+
1
3
5
-7
9
1
3
5
-7
9
2
4
6
-6
10
4
6
8
-4
12
6
8
10
-2
14
-6
-4
-2
-14
2
10
12
14
2
19

From the table above, it is clear that sum of two odd numbers will result an even number. But, in mathematics it is not justified to prove in this way (generalization). The proof that is justified is deductively. It is suppose as a deductive proof as follows :
Assume a dan b are two integers, then (2a + 1) and (2b + 1) are odd numbers. If they are added together, it becomes :
Because a and b are integers, so (a + b + 1)  is also integer. We know that the multiplication of two integers produces an even number. Then 2(a + b + 1) is an even number. So, we can conclude that the sum of two odd numbers is always even.

Komentar

Postingan populer dari blog ini

Matematika di India

Hilangkan Baper