Question

First three term in the sequence an=3n-5.

Answer 1

Answer:

an=3n-5 - given

putting the value of n= 1

a1= 3 x 1 -5

a1= 3-5=-2

a1= -2

_________________

putting value of n= 2

a2 = 3 x 2-5

a2= 6-5

a2=1

________________

putting the value of n= 3

a3 = 3 x 3-5

a3= 9- 5

a3= 4

___________________

so first 3 terms of a.p are -2,1 and 3

Answer 2

SOLUTION

TO DETERMINE

The First three term in the sequence

$\sf a_n = 3n - 5$

EVALUATION

Here the given sequence is

$\sf a_n = 3n - 5$

Now

First term

$\sf = a_1$

$\sf = (3 \times 1) - 5$

$= 3 - 5$

= - 2

Second Term

$\sf = a_2$

$\sf = (3 \times 2) - 5$

$\sf = 6 - 5$

$= 1$

Third term

$\sf = a_3$

$\sf = (3 \times 3) - 5$

$\sf = 9 - 5$

$= 4$

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