Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,459 questions

17,854 answers

1,446 comments

811,120 users

Calculate the (a) complex conjugate of the fraction

0 votes

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

asked Oct 6, 2018 in ALGEBRA 2 by anonymous

1 Answer

0 votes

(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

Related questions

asked Jul 7, 2016 in PRECALCULUS by anonymous
asked Sep 11, 2014 in ALGEBRA 2 by anonymous
...