quaternion square root of -1
quaternion square root of -1. We calculate the square root of -1 using the quaternions, which involves knowing how to multiply quaternion numbers. The answer will surprise you, because it involves spheres and it will make you see complex numbers in a new way, as north and south poles of balls. Quaternions are generalizations of imaginary numbers with i j k, and are useful in physics and quantum mechanics and robotics
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