Simplify :
(i) [1/ (1+ 2)] + [1/ ( 2+3)] + [1/ ( 3+ 4)] + [1/ ( 4+ 5)]
Answers
Answered by
4
4
Step-by-step explanation:
Simplifying, we get
(
1+i−2i+2
1+i+3−6i
)(
2−4i
3+4i
)
(
3−i
4−5i
)(
2−4i
3+4i
)
Hence
3−i
4−5i
.
2−4i
3+4i
=
6−12i−2i−4
12+16i−15i+20
=
2−14i
32+i
=
200
(32+i)(2+14i)
=
200
64+448i+2i−14
=
200
50+450i
=
4
1+9i
.
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0
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