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Answer: The multiplicative inverse of number value is equivalent to one of which has been previously multiplied by the original figure. The actual figure should never be equivalent to 0 in this case. X⁻¹ or 1/X will represent the multiplicative inverse of given value X. A number’s multiplicative inverse also is named as reciprocal.
1+i’s multiplicative inverse is 1/1+i.
1/(1+i) = (1-i)/(1² – i²)
= (1-i)/(2) Since, i2 = -1
= 1/2 (1-i)
As a result, the multiplicative inverse for 1+i becomes 1/2 (1-i).
