Proof: Square Root Example 2
Let's prove the following theorem:
((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3(1 / 2)) ⋅ (s / 2)
Proof:
# | Claim | Reason |
---|---|---|
1 | (3 / 4) ⋅ (s ⋅ s) = 3 ⋅ ((s ⋅ s) ⋅ (1 / 4)) | (3 / 4) ⋅ (s ⋅ s) = 3 ⋅ ((s ⋅ s) ⋅ (1 / 4)) |
2 | ((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) | if (3 / 4) ⋅ (s ⋅ s) = 3 ⋅ ((s ⋅ s) ⋅ (1 / 4)), then ((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) |
3 | (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) | (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) |
4 | ((s ⋅ s) ⋅ (1 / 4))(1 / 2) = s / 2 | ((s ⋅ s) ⋅ (1 / 4))(1 / 2) = s / 2 |
5 | (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) = (3(1 / 2)) ⋅ (s / 2) | if ((s ⋅ s) ⋅ (1 / 4))(1 / 2) = s / 2, then (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) = (3(1 / 2)) ⋅ (s / 2) |
6 | (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (s / 2) | if (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) and (3(1 / 2)) ⋅ (((s ⋅ s) ⋅ (1 / 4))(1 / 2)) = (3(1 / 2)) ⋅ (s / 2), then (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (s / 2) |
7 | ((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3(1 / 2)) ⋅ (s / 2) | if ((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) and (3 ⋅ ((s ⋅ s) ⋅ (1 / 4)))(1 / 2) = (3(1 / 2)) ⋅ (s / 2), then ((3 / 4) ⋅ (s ⋅ s))(1 / 2) = (3(1 / 2)) ⋅ (s / 2) |
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