Question

in 10 class arthemetic progressions the complete chapter is based on which formula?​

Answer 1

Answer:

General Form of AP a, a + d, a + 2d, a + 3d, . . .

The nth term of AP an = a + (n – 1) × d

Sum of n terms in AP S = n/2[2a + (n − 1) × d]

Sum of all terms in a finite AP with the last term as ‘l’ n/2(a + l

Step-by-step explanation:

a, a + d, a + 2d, a + 3d, a + 4d, ………. ,a + (n – 1) d

d = a2 – a1 = a3 – a2 = ……. = an – an – 1