Asked by Jacob
Find:
Re[1/(2+j)]
Im[2+j/(3+4j)]
Re[1/(2+j)]
Im[2+j/(3+4j)]
Answers
Answered by
MathMate
Rationalize the denominator by multiplying top and bottom by 2-j
1/(2+j)
=(2-j)/((2+j)(2-j))
=(2-j)/(4-j²)
=(2-j)/5
=(2/5)-(j/5)
Can you take it from here?
The next one is similar.
1/(2+j)
=(2-j)/((2+j)(2-j))
=(2-j)/(4-j²)
=(2-j)/5
=(2/5)-(j/5)
Can you take it from here?
The next one is similar.
Answered by
Jacob
Yes, thank you. I was doing it that way, but didn't know if I was correct.
Answered by
MathMate
Good, keep up the good work!
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