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junior college 2 | H2 Maths
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fred low
Fred Low

junior college 2 chevron_right H2 Maths chevron_right Singapore

i need solution step by step pls

Date Posted: 4 years ago
Views: 327
Eric Nicholas K
Eric Nicholas K
4 years ago
Later once my class finishes I write for you the steps to look out for when you attempt to do proof by induction.
Eric Nicholas K
Eric Nicholas K
4 years ago
Ok, the idea goes like this when we do mathematical induction and we have an equation to prove.

1. We need to prove that the base case (often n = 1) is true.

2. We are going to assume that the kth statement is true for some value of k (sorry, I wrote wrongly on my paper)

3. We are going to prove that the (k + 1)th case is true by doing a series of simplifications. We cannot just write the (k + 1)th statement immediately and say that it’s proven. Rather, we need to work out way out.

4. The third step above establishes that any two pairs of consecutive cases k and k + 1 will hold for any choice of k. Combined with the first step, this means that

- since the first statement (k = 1) is true, the second statement (k + 1 = 1 + 1 = 2) is true

- since the second statement (k = 2) is true, the third statement (k + 1 = 2 + 1 = 3) is true

- since the third statement (k = 3) is true, the fourth statement (k + 1 = 3 + 1 = 4) is true.

- and so on, infinitely.

So, this means that every single choice of k works.

As such, our equation has been proven by the method of induction.

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Eric Nicholas K
Eric Nicholas K's answer
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Long forgotten how it goes, but hopefully you understand what I am writing.