Find the multiplicative inverse of 2+5i
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JEE Question
z ( multiplicative inverse ) = 1/z = 1/-2+5i 1/-2+5i × -2-5i / -2-5i = -2-5i/(-2) square - (5i) = -2-5i / 4-(-25) [ because i(square)= -1] = -2-5i / 29 = -2/29 - 5i/29 Hence proved . ... The Questions and Answers of Find the reciprocal (or multiplicative inverse) of -2 + 5ia)b)c)d)Correct answer is option 'A'.
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