Question #4183

The sequence (x[sub]n[/sub]) is defined by the following formulas for the n[sup]th[/sup] term. Write the first five terms in each case.&

& (x[sub]n[/sub])= ((-1)[sup]n[/sup])/n

& (x[sub]n[/sub])= ((-1)[sup]n[/sup])/n

Expert's answer

it's not clear enough from the task what x_n is. I suppose x_n=((-1)^n)/notherwise -n/n=-1 and all terms =-1

So x_n=((-1)^n)/n and first five terms(we substitute corresponding

n=1,2,3,4,5 in our formula for x_n)

x_1=-1

x_2=1/2

x_3=-1/3

x_4=1/4

x_5=-1/5

So x_n=((-1)^n)/n and first five terms(we substitute corresponding

n=1,2,3,4,5 in our formula for x_n)

x_1=-1

x_2=1/2

x_3=-1/3

x_4=1/4

x_5=-1/5

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