accumulate

accumulate(f,x0,{x1,...,xn}) -- computes the list {x0,f(x0,x1),f(f(x0,x1),x2),f(f(f(x0,x1),x2),x3),...} . 

     i1 = accumulate(plus,1,{10,100,1000})
     
     o1 = {1,11,111,1111}
     
     o1 : List

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