The value of is
xyz
x2y2z2
4xyz
4x2y2z2
C.
4xyz
If A and B are square matrices of order 3 such that = - 1, = 3, then is equal to
- 9
- 81
- 27
81
Let A = , the only correct statement about the matrix A, is
A is a zero matrix
A = (- 1)I, where I is a unit matrix
A- 1 does not exist
A2 = I
The equation of normal to the circle 2x2 + 2y2 - 2 - 5y + 3 = 0 at (1, 1) is
2x + y = 3
x - 2y = 3
x + 2y = 3
None of these
A function f from the set of natural numbers to integers defined by f(n) = , is
one - one but not onto
onto but not one - one
one - one and onto both
neither one - one nor onto