Let `f(n)=prod_(r=1)^n ( sinr),n in N and S_1 : |f(n_1)|>|f(n_2)| AA n_1 < n_2`

If f(n)=prod_(r=1)^(n)cos r,n in N , then

If f(n)=prod_(r=1)^(n)cos r,n in N , then

Let f(n)=prod_(r=1)^(n) sin(r), where r is in radians, then

Let f(n)=prod_(r=1)^(n)sin(r), where r is in radians, then

Let f(1)=1 and f(n)=2 sum_(r=1)^(n-1)f(r) then sum_(n=1)^(m)f(n)=

Let f(n)=2 cos nx AA n in N , then f(1)f(n+1)-f(n) is equal to

Let f(n)=2cos nx AA n 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)

If f(n)=(-1)^(n-1)(n-1) and g(n)=n-f (n)AA n in N then (gog)(n)=

If f: N to N, and x_(2) gt x_(1) implies f(x_(2)) gt f(x) AA x_(1), x_(2) in N and f(f(n))=3n AA n in N," then " f(2)= _______.

If f: N to N, and x_(2) gt x_(1) implies f(x_(2)) gt f(x) AA x_(1), x_(2) in N and f(f(n))=3n AA n in N," then " f(2)= _______.