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  • 5 years ago

the imaginary number i is defined such that i2(square) =-1. what does i+i2(square)+i3(cube)+.......i49 equal?

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  1. watchmath
    • 5 years ago
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    Well you can use the geometric series formula. Look at the formula here : http://www.purplemath.com/modules/series5.htm Here \(a=i\) and \(r=i\). Give it a try and if you have any question you can come back here.

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