A sequence or series in which difference between any two consecutive terms is constant throughout the series.
Ex: 2,5,8,11,14...
Ex: 55,50,45,40...
TOPIC OF A.P. .
1. nth term or general term of an A.P
2. To Find the term from Tn
3. nth term from the end/last
4. First Negative term
5. Sum of nth term
6. Tn from Sn
7. Arithmetic mean (A.M)
8. Sum of Arithmetic progression
9. Choice of terms in an A.P
10. Some Important points.
अब हम एक-एक टॉपिक के बारे में विस्तार से अध्ययन करेंगे
TOPIC 1. nth term or general
term of an A.P. :
If the sequence 3 ,7 ,11,...A.P
first term a = 3
Common difference d= T2 - T1 = 7 - 3 = 4
If a is the first term common difference is d then A.P...
a, a+d ,a+2d , a+3d .................a+(n-1)d.
Now .
T1 = a
T2 = a + d
T3 = a + 2d
T4 = a + 3d
.
..
Tn= a + (n-1)d.
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