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Calculate the (a) complex conjugate of the fraction

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Calculate the (a) complex conjugate of the fraction (3 + 8i)/(1 + i).

asked Oct 6, 2018 in ALGEBRA 2 by anonymous

1 Answer

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(3 + 8i)/(1 + i)  =  [ (3 + 8i)/(1 - i) ] X [ (1 - i)/(1 - i)]

                       =  [ (3 + 8i)(1 - i) ] / (1^2 - i^2)

                       =  [ 3 -3i + 8i - 8(i^2)] /(1 - (-1))

                       =  [ 3 + 5i - 8(-1)] /(1 + 1)

                       =  [ 3 + 5i + 8] / 2

                       =  [ 11 + 5i] / 2

                       =  11/2 + 5i/ 2

Conjuagate of  11/2 + 5i/ 2 is  11/2 - 5i/ 2.

Answer :

Conjuagate of  11/2 + 5i/ 2 is  11/2 - 5i/ 2.

answered Oct 7, 2018 by homeworkhelp Mentor
edited Oct 7, 2018 by bradely

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