document.write( "Question 423089: find all seventh roots of 3+4i please try and give all steps... \n" ); document.write( "
Algebra.Com's Answer #295199 by stanbon(75887)\"\" \"About 
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find all seventh roots of 3+4i please try and give all steps...
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\n" ); document.write( "r = sqrt(3^2+4^2) = 5
\n" ); document.write( "theta = tan^-1(4/3) = 53.13 degrees
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\n" ); document.write( "(3+4i)^(1/7) = 5^(1/7)(cis(53.13+360n)/7)
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\n" ); document.write( "To find the 7 roots let n = 0,1,2,3,...,6
\n" ); document.write( "Note: 360/7 = 51.43 degrees
\n" ); document.write( "and 53.13/7 = 7.59
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\n" ); document.write( "So for n = 3 you get: 5^(1/7)cis(7.59+3(41.43))
\n" ); document.write( "etc.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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