Understanding Complex Numbers
Algebra · Flashcards · Recall
ALGEBRA · FLASHCARDS
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QUESTION
What is
−
1
\sqrt{-1}
−
1
equal to in terms of
i
i
i
?
QUESTION
What condition on
a
a
a
makes
a
+
b
i
a+bi
a
+
bi
a pure imaginary number?
QUESTION
What is
i
2
i^2
i
2
?
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ANSWER
−
1
-1
−
1
. By definition of the imaginary unit.
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