Question

write the first 4 terms of the AP when given the first terms(a)and common difference (d)a=2,d=-3​

Answer 1

Answer:

2,-1,-4,-7

Step-by-step explanation:

First term a = 2.

Second term is, a + d = 2 - 3 = -1

Third term is, a + 2d = 2 - 6 = -4 and

fourth term is, a + 3d = 2 - 9 = -7

Answer 2

Answer :-

{ A.P. = - 1, - 4 , - 7 , -10 , -13 }

Given :-

a = 4

d = 3

Here ,

" a " = First term of an A.P

" d " = Common difference of an A.P

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Have to Find :-

• Write the A.P.

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Calculations :-

As we all know the formula of finding an A.P .

Let's simply apply the formula here :-

$\large{\boxed{\bold{a_n\:=\:a + (n - 1)d}}}$

aₙ=a+(n-1)d

Second term

↠ a_2 = 2 + (2 - 1) -3

↠ a_2 = 2 + 1 × -3

↠ a_2 = 2 - 3

↠ a_2 = -1

Third term

↠ a_3 = 2 + ( 3 - 1 ) × -3

↠ a_3 = 2 + 2 × -3

↠ a_3 = 2 - 6

↠ a_3 = - 4

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Fourth term

↠ a_4 = 2 + ( 4 - 1 ) × -3

↠ a_4 = 2 + 3 ×- 3

↠ a_4 = 2 - 9

↠ a_4 = - 7

Fifth term

↠ a_5 = 2 + ( 5 - 1 ) × -3

↠ a_5 = 2 + 4 × -3

↠ a_5 = 2 - 12

↠ a_5 = -10

A.P. = -1, -4 , - 7 , -10 , -13 .....