Can someone explain to me why sigma notation for 5x + 6x + 7x + 8x + 9x + 10x is
10
E nx
5
rather than 1 to 6, and 4x + nx?
I would write the 4x + nx as (4+n)x if you wanted to do it your way.Can someone explain to me why sigma notation for 5x + 6x + 7x + 8x + 9x + 10x is
10
E nx
5
rather than 1 to 5, and 4x + nx?