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===Answer 1=== | ===Answer 1=== | ||
| − | <span style="color:green"> TA's comments: Any complex number can be written as one single complex exponential. i.e. <math>a+jb=\sqrt{a^2+b^2}e^{j\theta}, where\ tan\theta = \frac{b}{a}</math> </span | + | <span style="color:green"> TA's comments: Any complex number can be written as one single complex exponential. i.e. <math>a+jb=\sqrt{a^2+b^2}e^{j\theta}, where\ tan\theta = \frac{b}{a}</math> </span> |
| − | + | ||
===Answer 2=== | ===Answer 2=== | ||
Write it here. | Write it here. | ||
Revision as of 04:24, 29 August 2011
Contents
Simplify this summation
$ \sum_{n=-42}^5 3^{n+1} (1+j)^n $
You will receive feedback from your instructor and TA directly on this page. Other students are welcome to comment/discuss/point out mistakes/ask questions too!
Answer 1
TA's comments: Any complex number can be written as one single complex exponential. i.e. $ a+jb=\sqrt{a^2+b^2}e^{j\theta}, where\ tan\theta = \frac{b}{a} $
Answer 2
Write it here.
Answer 3
write it here.
