write first four terms of the AP, when the first term a and the common difference d are a = 4, d= -3.
Answers
To find :
- We need to find the four terms of the AP .
Given :
- Common difference (d) = - 3
- First term (a) = 4
we know that,
- an = a + (n - 1)d
- First term = a
second term :-
= a + (2 - 1)d
= a + 1d
- second term = a + d
Third term :-
= a + (3 - 1)d
= a + 2d
- Third term = a + 2d
Four term :-
= a + (4 - 1)d
= a + 3d
- Fourth term = a + 3d
Now,
First four terms are : -
- First term (a) = 4
Second term a + d
= 4 + (-3)
= 4 - 3
= 1
Third term a + 2d
= 4 + 2 × (-3)
= 4 + (-6)
= 4 - 6
= -2
Fourth term a + 3d
= 4 + 3 × (-3)
= 4 + (-9)
= -5
Hence,
First four terms of AP are :- 4 , 1 , -2 ,-5.
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Answer:
To find :
We need to find the four terms of the AP .
Given :
Common difference (d) = - 3
First term (a) = 4
we know that,
an = a + (n - 1)d
First term = a
second term :-
= a + (2 - 1)d
= a + 1d
second term = a + d
Third term :-
= a + (3 - 1)d
= a + 2d
Third term = a + 2d
Four term :-
= a + (4 - 1)d
= a + 3d
Fourth term = a + 3d
Now,
First four terms are : -
First term (a) = 4
Second term a + d
= 4 + (-3)
= 4 - 3
= 1
Third term a + 2d
= 4 + 2 × (-3)
= 4 + (-6)
= 4 - 6
= -2
Fourth term a + 3d
= 4 + 3 × (-3)
= 4 + (-9)
= -5
Hence,
First four terms of AP are :- 4 , 1 , -2 ,-5.
Step-by-step explanation: