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| 1. |
यदि ` ( 1 )/( a - ib ) = ( x- iy )/( x+ i y ) `, तो ` a ^ 2 + b ^ 2 `A. `x^2+y^2 `B. `1`C. `0`D. इनमे से कोई नहीं |
| Answer» Correct Answer - b | |