How to formulate the summation of sequence number

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Skydriver
Skydriver 2020-3-28
评论： Skydriver 2020-3-28
I have a sequence data between X and Y. In general Y is X summation
X Y
6.84 6.84
12.04 18.88
9.47 28.35
8.53 36.88
6.91 43.79
2.93 46.72
0.82 47.54
0.54 48.08
0 48.08
0 48.08
Y1=X1
Y2=X1+X2
Y2=X1+X2+X3
how to develop the function.
Thanks

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Tommy
Tommy 2020-3-28
Try
Y = cumsum(X)

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