wscn
21 Views · 08/22/19
larrylaprise
11 Views · 08/22/19
1.5 A geometric proof of the integer sum formula can be found by adding the squares of the two mos
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14 Views·
03/03/23
We give an alternative proof that 1+ 2 + ... + n = n(n+1)/2. Our motivation is to explain the 1/2 factor in terms of the area of a triangle.
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wscn
21 Views · 08/22/19
larrylaprise
11 Views · 08/22/19
