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In this series: e^(-x^2)= 1 - x^2 + x^4/2! -x^6/3! +x^8/4!... why do we have one negative and the next positive?

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  • In this series: e^(-x^2)= 1 - x^2 + x^4/2! -x^6/3! +x^8/4!... why do we have one negative and the next positive?


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