Find the multiplicative inverse of (1+i) (1+2i) /(1+3i). Spams will be reported. I want quality answer.
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Find the multiplicative inverse of (1+i) (1+2i) /(1+3i). Spams will be reported. I want quality answer.
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Answer:
Correct option is
B
13
2+3i
Let Z
i
be the multiplicative Inverse of 2−3i
so that,
Z
i
(2−3i)=1⇒Z
i
=
2−3i
1
=
(2−3i)(2+3i)
2+3i
=
2
2
−(−3
2
)
2+3i
=
(2−3i)(2+3i)
2+3i
=
2
2
+3
2
2+3i
=
13
2
+
13
3i
hope it helps you✌
Answer:
z=1−3i1+2i
=1−3i1+2i×1+3i1+3i
=1−9i21+3i+2i+6i2
=1+9−5+5i
z=(2−1+21i),z−1=(2−1−21i)