Question

Find the first term and common difference of the Arithmetic progression whose nth terms are given below (i) tn= -3+2n (ii) tn = 4-7n2.Find the 19" term of an A.P. -11,-15,-19​

Answer 1

Answer:

First first 2 questions find t1, t2 then d...

for third qn. find 'd' then substitute in formula