" We know that "t_(n)=a+(n-1)d

(a) In the formula t_(n)=[a+(n-1)d] , make 'n' as the subject. (b) find the value of n when t_(n)=92,a=1 and d=13 .

In the formula t_(n)=a(n-1)d , make n as the subject

Given that t_(n+1) = ^5t_n - 8 , t_1 = 3 , prove by method of induction that t_n = 5^(n-1) + 2

In the formula t_(n)=(1)/(a+(n-1)d) , how many auxiliary formulae are possible ad what are they?

If t_(n)" is the " n^(th) term of an A.P. then the value of t_(n+1) -t_(n-1) is ……

Find d for an A.P. if (i) t_(10) =20, t_(9) = 18 (ii) t_(n) = 7, t_(n-1) = 10

Find the terms (s) indicated in each case: (i) t_(n)=t_(n-1)+3(ngt1),t_(1)=1,t_(4) (ii) T_(n)=(T_(n-1))/(T_(n-2)),(ngt2),T_(1)=1,T_(2)=2,T_(6)

Let T_(r ) be the rth term of an A.P. for r = 1,2,3, "…………….." If for some positive integers m,n we have T_(m) = ( 1)/( n ) and T_(n) = ( 1)/( m ) , then T_(mn) equals :