No active concepts yet.
Proof and Reasoning (Lesson 1/3)
1 / 12
Discussion
Consider the sum 1+3+5+⋯+(2n−1).
(a)
Evaluate the sum in the case n=3,4,5.
Solution:
Compute directly by adding the first few odd numbers.
For n=3:
For n=4:
For n=5:
So the sums are 9,16,25 respectively.