Answer:
Step-by-step explanation:
1. Un = 3^ n
U1 = 3, U2 = 9, U3 = 27, U4 = 81, U5 = 243
2. Un = (-2/5)^n
U1 = -2/5, U2 = 4/25, U3 = 8/125, U4 = 16/625, U5 = 32/3125
3. Un = sin npi/2
U1 = 1, U2 = 0, U3 = -1, U4 = 0, U5 = -1
4. Un = 3n/n+4
U1 = 3/5, U2 = 1, U3 = 9/7, U4 = 3/2, U5 = 5/3
5. Un = (-1)^n+1(2/n)
U1 = 1, U2 = 2, U3 = -1/3, U4 = 3/2, U5 = -3/5
6. Un = 2 + 2/n - 1/n^2
U1 = 3, U2 = 11/4, U3 = 23/9, U4 = 39/16, U5 = 59/25
