Find first term if a2=38 and a6=22
Answers
Answered by
1
Step-by-step explanation:
very simple
a+d=38
a+5d=22
by examination method
a=42
Answered by
0
Step-by-step explanation:
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2 A
2 B
3 A
3 B
3 C
3 D
3 E
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5 A
5 B
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Q. 3 E
4.5
( 4 Votes )
Find the respective terms for the following APs.
a2 = 38, a6 = -22, find a1, a3, a4, a5
AP- Mathematics
6. Progressions
Answer
Given that a2 = 38 & a6 = -22
a2 = a1 + (2-1)d
38 = a1 + d ⇒ 1
a6 = a1 + (6-1)d
-22 = a1 + 5d ⇒ 2
By subtracting the both equations
38 – (-22) = (a1 + d ) - (a1 + 5d)
60 = -4d
d = -15
By substituting in 1 equations we get a1
38 = a1 + (-15)
53 = a1
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