aWrite the first four terms of the sequence defined by the f

a)Write the first four terms of the sequence defined by the following formula:

b)Write the first four terms of the sequence defined by the following recursive formula:

Solution

a)

a_1=(-1)^1=-1

a_2=(-1)^2=1

a_3=(-1)^3=-1

a_4=(-1)^4=1

b)

b_1=b_0+3=2+3=5

b_2=b_1+3=5+3=8

b_3=b_2+3=8+3=11

b_4=b_3+3=11+3=14