Find the sum of the infinite geometric series, if it exists. 4 - 1 + - + . . .
A. - 1

B. 3

C.16/5

D. does not exist

Question

Find the sum of the infinite geometric series, if it exists. 4 - 1 + - + . . .
A. - 1
	
B. 3
	
C.16/5
	
D. does not exist

perl · Answer

It looks like the ratio is -1/4

anonymous · Answer

what do you mean, the question?

perl · Answer

geometric series:  a + a*r + a*r^2 + ... 

here we have 
4 + 4*(-1/4) + 4*(-1/4)^2 + ... 

the sum of a geometric series :
a + a*r + a*r^2 + ...  = a / ( 1 - r )

anonymous · Answer

ok so is the problem wrong or are we working out the problem

anonymous · Answer

are you still here?

perl · Answer

the problem is fine :)

perl · Answer

can you finish it based on what i gave you

anonymous · Answer

No im sorry i dont understand this at all can you elaborate just a little bit more

anonymous · Answer

Find the sum of the infinite geometric series, if it exists. 4 - 1 +1/4 -1/16 + ... .
A. - 1
	
B. 3
	
C. 16/5

D.does not exist

anonymous · Answer

im so sorry you were right

anonymous · Answer

but its not a -1/4