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प्रश्न
Answer the following:
Evaluate: i131 + i49
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उत्तर
i131 + i49
= i130.i + i48.i
= (i2)65.i + (i2)24.i
= (– 1)65.i + (– 1)24.i
= – i + i
= 0.
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i2 + i3 + ... + i4000 =
