Mathematics, 24.09.2021 16:00 Jmajano99

The first five triangular numbers are shown, where n represents the number of dots in the base of the figure, and d (n) represents the total number of dots in the figure. When , there is 1 dot. When , there are 3 dots. When , there are 6 dots. Notice that the total number of dots increases by n each time.

Use induction to prove that .

The first five triangular numbers are shown, where n represents the number of dots in the base of t

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