Question

please give me all formulas from chapter 5 (AP) class 10​ in attachment

Answer 1

Nth term of an AP IS GIVEN BY

a+(n-1)d=an

Sum of nth terms of an AP

Sn=n/2(2a +(n-1)d)

HOPE IT WORKS FOR UR EXAM

@ANJANASHARMA

Answer 2

an =a+(n-1)d
sn= n/2{2a+n-1×d}
sn=n/2{a+L}
two terms=a-d,a+d
three terms =a-d,a,a+d