What Is Nth Term For -1 , 1 , -1 , 1 , -1 ,...

What is nth term for -1 , 1 , -1 , 1 , -1 ,...

 

Answer:

Step-by-step explanation:

Geometric Progression

an=a1(r)^(n-1)

an=(-1)(-1)^(n-1)

an=-(-1)^(n-1)

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