2. a:
3. b:
4. sum(a+b
i | i < n)2 = n(a+a+b(n-1))
sum(a+bi | i < n) = ((n(a+a+b(n-1))) 
2)
n:, a,b:. sum(a+bi | i < n) = ((n(a+a+b(n-1))) 2)
n:, a,b:. sum(a+bi | i < n)2 = n(a+a+b(n-1))
[n;a;b]
| 1 | 1. n: 2. a: 3. b: 4. sum(a+b i | i < n)2 = n(a+a+b(n-1)) sum(a+bi | i < n) = ((n(a+a+b(n-1))) 2) | 7 steps |
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