Write the value of λ so that the vectors = and = are perpendicular to each other ?
If the determinant of matrix A of order 3 × 3 is of value 4, write the value of |3A|.
Let A = {1, 2, 3, 4}. Let R be the equivalence relation on A × A defined by (a, b)R(c, d) if a + d = b + c. Find the equivalence class [(1,3)].