" If "-1

The value of (1-1/2)(1-1/3)(1-1/4)(1-1/5)…(1-1/n) is :

The roots of the equation |{:(" "1,t-1," "1),(t-1," "1," "1),(" "1," "1,t-1):}|=0 are

The rank of [(1,1,1),(-1,1,1),(1,1,1)] is

The rank of [(1,-1,1),(1,1,-1),(-1,1,1)] is

Show that Determinant of [[1+a,1,1],[1,1+b,1],[1,1,1+c]] = abc (1+1/a+1/b+1/c)

Show that 1+(1)/(a)+(1)/(b)+(1)/(c ) is a factor of |(1+a, 1, 1),(1, 1+b, 1),(1,1,1+c)| .

The simplest value of ((1+(1)/(2))(1+(1)/(3))(1+(1)/(4))....(1+(1)/(50)))/((1-(1)/(2))(1-(1)/(3))(1-(1)/(4)).....(1-(1)/(50))) is

If A^(-1)=([2,1],[1,1]) ,then A is equal to: (A) ([2,-1],[-1,1]) (B) ([-2,1],[-1,-1]) (C) ([1,-1],[-1,2]) (D) ([-2,1],[1,1])

The maximum value of |(1,1,1),(1,1+sintheta,1),(1,1,1+costheta)| is 1/2