SOLUTION: guess a simple formula for the sequence hat begin: -1, 1/2, -1/3, 1/4, -1/5

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Question 697085: guess a simple formula for the sequence hat begin: -1, 1/2, -1/3, 1/4, -1/5
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

an=%28-1%29%5En%2Fn..........n=1,2,3.......

check:
n=1
a1=%28-1%29%5E1%2F1=-1

n=2
a2=%28-1%29%5E2%2F2=1%2F2

n=3
a3=%28-1%29%5E3%2F3=-1%2F3....and so on