Question

please give me all the formulas of AP

☺☺☺

Answer 1

here,an is last/nth term,d is common difference
an=a+(n-1)d,
to find if the given progression is in Ap or not
AP=a2-a1=a3-a2
to find sum of given terms,
if first term a1 and common difference is given
sn=n/2(2a+(n-1)d),
sum of all terms,if a1and last term an is given,
sn=n/2(a1+an)
hope this helps you quickly

Answer 2

Heyya!

Formulas

note that a=first term , n=no. of term and d=common difference

Tn=a+(n-1)d

Finding term from end = l-(n-1)d

Arithematic mean second term = (first term + third term)/2

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



Hope it helps!☺️