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Question
Simplify: 1i+1+1i−1
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Solution
LetZ=1i+1+1i−1
=i−1+i+1i2−1
=2i−1−1
=−2i2
Z=−i
LetZ=1i+1+1i−1
=i−1+i+1i2−1
=2i−1−1
=−2i2
Z=−i
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