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Log Negative One Zero

Theorem: log(-1) = 0

Proof:

a. log[(-1)^2] = 2 * log(-1)




On the other hand:

b. log[(-1)^2] = log(1) = 0




Combining a) and b) gives:

2* log(-1) = 0

Divide both sides by 2:

log(-1) = 0