- #1
Char. Limit
Gold Member
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Are there any identities that are true for all real numbers, but not for all complex numbers? The only one I can think of is...
[tex]\sqrt{ab}=\sqrt{a}\sqrt{b}[/tex]
Which is only true if a and b are POSITIVE, not real. But is there any identity that works for all real numbers, but fails for complex numbers?
[tex]\sqrt{ab}=\sqrt{a}\sqrt{b}[/tex]
Which is only true if a and b are POSITIVE, not real. But is there any identity that works for all real numbers, but fails for complex numbers?