for an AP t2 =-1and T5=5 then t1=
Answers
Answered by
0
Answer:
-3
Step-by-step explanation:
t2 = a + d = -1
t5 = a + 4d = 5
So, a + 4d - a - d = 3d = 5-(-1) = 5+1 = 6
=> d = 2
a + 2 = -1
=> a = -3
So, t1 = a = -3
Answered by
1
Answer:
Given ;
→t2 = -1 → t5 = 5
We know that,
............................................. --------> eq 1
Similarly ,
..............................................--------> eq 2
eq 2 - eq 1,
Substituting in eq 1,
=> a + 2 = -1
=> a = - 3
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