Question

7. From the following general term (tn) and the first five terms.
tn =(-1)^n/ n² + n-1
​

Answer 1

Answer:

tn =(-1)^n/ n² + n-1

Step-by-step explanation:

tn=57(-5)^4579

yh 57345

Answer 2

Answer:

The sequence is 1, 3, 5...

The given sequence is t

n

=2n−1.

The first term t

1

can be determined by substituting n=1 in the sequence t

n

=2n−1 as follows:

t

1

=(2×1)−1=2−1=1

The second term t

2

can be determined by substituting n=2 in the sequence t

n

=2n−1 as follows:

t

2

=(2×2)−1=4−1=3

The third term t

3

can be determined by substituting n=3 in the sequence t

n

=2n−1 as follows:

t

3

=(2×3)−1=6−1=5

Hence, the sequence is 1,3,5,...