Let `f(n)=2cosn xAAn in N ,` then `f(1)f(n+1)-f(n)` is equal to (a)`f(n+3)` (b) `f(n+2)` (c)`f(n+1)f(2)` (d) `f(n+2)f(2)`

Let f(n)=1+(1)/(2)+(1)/(3)++(1)/(n). Then f(1)+f(2)+f(3)+f(n) is equal to (a) nf(n)-1( b) (n+1)f(n)-nn(c)(n+1)f(n)+n(d)nf(n)+n

If f:(1, oo) to (2,oo) is given by f(n) = n+1 , then f^-1 (n) equals to?

If f(x)=(a-n^(n))^(1//n) where a gt 0 and n in N , then f[f(x)] is equal to :

if f(x)=x^(n) then f(1)+f'(1)/(1!)+f''(1)/(2!)+...+(f^(n)(1))/(n!) is equal to

Given f(1)=2 and f(n+1)=(f(n)-1)/(f(n)+1)AA n in N then

If f(n+1)=(2f(n)+1)/(2) for n=1, 2, 3……….. and f(1)=2 , then (f(101))/(10) is equal to

f (1) = 1, n> = 1f (n + 1) = 2f (n) +1 then f (n) =

f_n(x)=e^(f_(n-1)(x)) for all n in Na n df_0(x)=x ,t h e n d/(dx){f_n(x)} is (a)(f_n(x)d)/(dx){f_(n-1)(x)} (b) f_n(x)f_(n-1)(x) (c)f_n(x)f_(n-1)(x).......f_2(x)dotf_1(x) (d)none of these