Question

the value of i+i²+i³+....20 terms is​

Answer 1

❥❥ Answer ❥❥

$1 + {i}^{2} + {i}^{4} + {i}^{6} + {i}^{8} + {i}^{10} + {i}^{12} + {i}^{14} + {i}^{16} + {i}^{18} + {i}^{20} \\ = 1 + ( - 1)+1+(−1)+1+(−1)+1+(−1)+1+(−1)+1 \\ \\ =1 (Ans) \\ \\ Formula: \\ {i}^{2} = - 1 \: and \: {i}^{4} = 1$

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