Question

Write down in terms of n, an expression for the nth term of the following sequences: -7, -12, -17, -22, -27.

Answer 1

Answer:

Step-by-step explanation:

a

n

=

1

n

2

Explanation:

n

:

1

,

2

,

3

,

4

,

5

...

a

n

:

1

,

1

4

,

1

9

,

1

16

,

1

25

...

1

2

=

1

,

2

2

=

4

,

3

2

=

9

, etc.

n

:

1

,

2

,

3

,

4

,

5

...

n

2

:

1

,

4

,

9

,

16

,

25

...

n

:

1

,

2

,

3

,

4

,

5

...

1

n

2

:

1

1

,

1

4

,

1

9

,

1

16

,

1

25

...

∴

a

n

=

1

n

2