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i = cos /2 + i sin /2 = ei /2ii = (ei /2)i = e- /2 (As i2 = -1)= 1/e /2Now e lies between 2 and 3. /2 is approximately = 1.57 Hence e /2 isn't a very large value. Infact it will be less than 6 but definitely greater than 1.Hence its reciprocal 1/e /2 should be less than unityAnd hence ii is a real number less than unity. Please check the question. It shouldn't be a large real number. |
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/2 + i sin







