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प्रश्न
Find the equation in cartesian coordinates of the locus of z if |z| = 10
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उत्तर
Let z = x + iy
|z| = 10
∴ |x + iy| = 10
∴ `sqrt(x^2 + y^2)` = 10
∴ x2 + y2 = 100
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