Q. Find an explicit formula for the geometric sequence 12,24,48,96,….Note: the first term should be b(1).b(n)=
Identify Sequence Type: Identify the type of sequence.The sequence 12,24,48,96,extellipsis is a geometric sequence because each term is obtained by multiplying the previous term by a constant ratio.
Determine First Term and Common Ratio: Determine the first term (b1) and the common ratio (r) of the sequence.The first term is b1=12.To find the common ratio, divide the second term by the first term: r=1224=2.
Write Explicit Formula for nth Term: Write the explicit formula for the nth term of the geometric sequence.The formula for the nth term of a geometric sequence is b(n)=b(1)⋅r(n−1).Substitute b(1)=12 and r=2 into the formula.b(n)=12⋅2(n−1).
More problems from Write variable expressions for geometric sequences