Consider the following geometric sequence

-5,10,-20,40

if the explicit formula for the sequence above is expressed in the form an=b*c^n-1, determine the values pf b and c

b=

c=

Question

Mathematics

Maggie Campos

15 July, 17:43

Consider the following geometric sequence

-5,10,-20,40

if the explicit formula for the sequence above is expressed in the form an=b*c^n-1, determine the values pf b and c

b=

c=

+1

Answers (1)

Know the Answer?

Ryann Burch · Answer 1

A geometric sequence is of the form:

a (n) = ar^ (n-1), a=initial term, r=common ratio, n=term number ... in this case:

a (n) = - 5 * (-2) ^ (n-1)

So for your question:

b=-5 and c=-2

Consider the following geometric sequence-5,10,-20,40if the explicit formula for the sequence above is expressed in the form an=b*c^n-1, determine the values pf b and cb=c=

Consider the following geometric sequence

-5,10,-20,40

if the explicit formula for the sequence above is expressed in the form an=b*c^n-1, determine the values pf b and c

b=

c=