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Have a question on complex numbers.

Z1= 1+j2, Z2= 2+j5
Find total impedance in Cartesian and polar form of two impedances in parallel:

1/ZT = 1/Z1 + 1/Z2

I get to 39/58 + 83/58 j but then get a bit lost.

1 answer

so, what's wrong with that as an answer? That's what I get, too.

http://www.wolframalpha.com/input/?i=1%2F%281%2F%281%2B2i%29+%2B+1%2F%282%2B5i%29%29

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