Engineering Board Exam Reviewer · Complex Numbers: Operations · medium

Simplify 1i+ 11+i.

1. 1/2 + 3/2i
2. 1 - i
3. 1/2 - 3/2i
4. -1/2 - 3/2i

Answer

C. 1/2 - 3/2i

Solution

1i=-i and 11+i=1-i/2. The sum is -i+ 12- i2= 12- 32i.

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