Why there only exists positive (complex) infinity
submitted 10 months ago * by [deleted] from (self.TIL)
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[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 0 fun2 insightful - 1 fun - 10 months ago* (2 children)
Because squares are always positive.
i2 = -1
02 = 0, a non-negative number, but not positive
REAL squares are always NON-NEGATIVE
In this case you have already defined 'd' and 'f' as real, so it isn't a problem, but this isn't technically a correct statement. You claim to be a math professor, so I'm going to expect you to be technically accurate
[–][deleted] 10 months ago (1 child)
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[–][deleted] 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 0 fun2 insightful - 1 fun - 10 months ago (0 children)
There is still the issue of you saying positive, when you mean non-negative
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