Write the following summation in expanded form:?

Question

∑ (-1)i/(i + 1) for i = 0 to n

Answer 1

=1-1/2+1/3-1/4+1/5++++++
+(-1)^n*1/(n+1)

Answer 2

ok, the ok=a million and the 5 propose that there are going to be 5 words further at the same time. You get the cost of each and every of those words with the aid of substituting ok for a million, then for 2, then for 3, 4, and 5. Like so: (a million/2)*a million + (a million/2)*2 + (a million/2)*3 + (a million/2)*4 + (a million/2)*5 it truly is elevated sort. then you definately can evaluate it, too: 15/2 .