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Chose any non-zero integer k. Then 1/1 = k/k.Chose any non-zero integer k. Then 1/1 = k/k.Chose any non-zero integer k. Then 1/1 = k/k.Chose any non-zero integer k. Then 1/1 = k/k.
Assuming the elements are integer type...
a[k] ^= a[k+1];
a[k+1] ^= a[k];
...but if they are not integer type...
temp = a[k];
a[k] = a[k+1];
a[k+1] = temp;
Factor them.
k2 = k x k
k2 - 1 = (k - 1)(k + 1)
k2 - 2k + 1 = (k - 1)(k - 1)
Combine the factors, eliminating duplicates.
k2(k + 1)(k - 1)(k - 1) = k5 - k4 - k3 + k2, the LCM
It is 1, since k^1 = k.
-k = -1*k, so the coefficient is minus 1