Loading [MathJax]/jax/output/SVG/jax.js
 
+0  
 
0
2798
3
avatar+16 

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

 Jul 27, 2015

Best Answer 

 #2
avatar+26396 
+10

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

 

t1=2r=82=4tn=t1rn1tn=(2)(4)n1tn=(2)(4)n(4)1tn=(2)(4)1(4)ntn=24(4)ntn=12(4)n

 

 Jul 28, 2015
 #1
avatar+130458 
+10

-2, 8, -32, 128

 

The "formula"  is given by:

 

(-1)n(2)2n - 1  for n ≥ 1

 

 

 Jul 28, 2015
 #2
avatar+26396 
+10
Best Answer

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

 

t1=2r=82=4tn=t1rn1tn=(2)(4)n1tn=(2)(4)n(4)1tn=(2)(4)1(4)ntn=24(4)ntn=12(4)n

 

heureka Jul 28, 2015
 #3
avatar+118696 
+5

I just wanted to muck around with this question and show how all the answers can be tied together :))

I would normally just have stopped on the first line :)

 

Write the explicit formula that represents the geometric sequence -2, 8, -32, 128

a=-2 r=-4

 

 

tn=2(4)n1ortn=2(4)n(4)1tn=24(4)ntn=12(4)ntn=12(1)n(4)ntn=12(1)n(22)ntn=12(1)n22ntn=(1)n22n1

 Jul 29, 2015

0 Online Users