Find Specified Terms of Arithmetic and Geometric Sequences

Find\ the\ 10^{th}\ term\ of\ the\ sequence\ 2,\ 5,\ 8,\ 11,\ ...

arithmetic: difference between terms is an additive constant

geometric: difference between terms is a multiplicative constant

Check A:     5 – 3 = 3

8 – 5 = 3

11 – 8 = 3

 

 

 

 

10^{th}\ term=\ 29

 

Find\ the\ 6^{th}\ term\ of\ the\ sequence\ \frac{3}{4},\ \frac{3}{2},\ 3,\ 6,\ ...

Check A:

\frac{3}{2} -\frac{3}{4} =\frac{6}{4} -\frac{3}{4} =\frac{3}{4}

3-\frac{3}{2} =\frac{6}{2} -\frac{3}{2} =\frac{3}{2}

Check G:

\frac{3}{2}\div\frac{3}{4} =\frac{3}{2}\times\frac{4}{3} =\frac{4}{2} =2

3\div\frac{3}{2} =3\times\frac{3}{2} =2

6\div 3=2

 

 

 

 

 

6^{th}\ term=24