Let P(n) be the statement that 12 + 22+ = n(n + 1)(2n+1)6

Chapter 5, Problem 3E

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QUESTION:

Let P(n) be the statement that 12 + 22+ = n(n + 1)(2n+1)6 for the positive integer n.a) What is the statement P(1)?________________b) Show that P(1) is true, completing the basis step of the proof.________________c) What is the inductive hypothesis?________________d) What do you need to prove in the inductive step?________________e) Complete the inductive step, identifying where you use the inductive hypothesis.________________f) Explain why these steps show that this formula is true whenever n is a positive integer.

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QUESTION:

Let P(n) be the statement that 12 + 22+ = n(n + 1)(2n+1)6 for the positive integer n.a) What is the statement P(1)?________________b) Show that P(1) is true, completing the basis step of the proof.________________c) What is the inductive hypothesis?________________d) What do you need to prove in the inductive step?________________e) Complete the inductive step, identifying where you use the inductive hypothesis.________________f) Explain why these steps show that this formula is true whenever n is a positive integer.

ANSWER:

Step 1 of 6

a) P open parentheses 1 close parentheses equals 1 squared equals open parentheses 1 cross times open parentheses 1 plus 1 close parentheses cross times 2 open parentheses 1 close parentheses plus 1 close parentheses divided by 6
equals open parentheses 1 cross times 2 cross times 3 close parentheses divided by 6 equals 1

 

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