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![[Post New]](/templates/default/images/icon_minipost_new.gif) 25 Apr 2008 21:45:18 IST
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Q) Find all the seventh roots of (3+4i).
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25 Apr 2008 21:51:27 IST
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well do it like this
3+4i= (x+iy)^7 then put x= rcosa and y= rsina........apply demoivre therem and equate real and imag parts.......then simple trig. and find the values of r and a........that would give u the roots
hope it helps
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