how to solve

sqrt (1 + j1049.3)(j0.075)

i try it but.. keep on getting negative answer.. (Headbang)

the answer should be 0.004 + j8.87

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- Sep 13th 2011, 06:57 AMnamecksolving comple number
how to solve

sqrt (1 + j1049.3)(j0.075)

i try it but.. keep on getting negative answer.. (Headbang)

the answer should be 0.004 + j8.87 - Sep 13th 2011, 07:00 AMProve ItRe: solving comple number
- Sep 13th 2011, 07:02 AMnameckRe: solving comple number
- Sep 13th 2011, 07:04 AMProve ItRe: solving comple number
- Sep 13th 2011, 08:53 AMPlatoRe: solving comple number
As you can see here the given answer is correct.

What are you using to calculate the value?

What is the source and text of the original question? - Sep 13th 2011, 09:02 AMnameckRe: solving comple number
ya.. i get the answer from wolfram also..

i'm using DeMoivre's theorem.. still cannot get the correct answer..

question is about transmission line..

i need solve the complex number to get the value of propagation constant..

and still i didn't get the correct answer.. got any idea to solve it Plato? - Sep 13th 2011, 09:25 AMPlatoRe: solving comple number
- Sep 13th 2011, 09:31 AMnameckRe: solving comple number
should i apply DeMoivre's Theorem?

- Sep 13th 2011, 09:43 AMPlatoRe: solving comple number
- Sep 13th 2011, 10:41 PMnameckRe: solving comple number
got it!

change to polar form first.. then change to rectangular form back..

then.. Walla! got the answer.. thanks guys.. =)