Alexander B. answered • 05/17/18

PhD in Engineering with 20 yrs of Math and Science Teaching Experience

_{1}=b(c)

^{0}= b*1 = -5, or

**b = -5**

_{2}=-5(c)

^{1}= 10, or

**c = -2**

Peighton M.

asked • 05/17/18Consider the following geometric sequence

-5,10,-20,40...

If the explicit formula for the sequence above is in the form a_{n}=b(c)^{n-1}, determine the value of b and c

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Alexander B. answered • 05/17/18

PhD in Engineering with 20 yrs of Math and Science Teaching Experience

Apparently

a_{1}=b(c)^{0} = b*1 = -5, or** b = -5**

a_{2}=-5(c)^{1} = 10, or **c = -2**

Mark M. answered • 05/17/18

Mathematics Teacher - NCLB Highly Qualified

a_{n} = (2a_{n-1})(-1)^{n-1}

So what is b and c?

Kenneth S. answered • 05/17/18

Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018

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