Category: Mathematics

Categories
Mathematics

* is said to be commutative in A for all a,b ε A

  1. a + b = b + a
  2. a * b = b * a
  3. a – b = b – a
  4. a * b ≠ b * a
Categories
Mathematics

(x+2)² = x² + 4x + 4 is

  1. a linear equation
  2. cubic equation
  3. an identity
  4. an euation
Categories
Mathematics

(secθ-tanθ)² =

  1. 1 + sinθ/1 – sinθ
  2. (1 – sinθ)/(1 + sinθ)
  3. (1 – cosθ)/(1+cosθ)
  4. cscθ
Categories
Mathematics

(n+2)(n+1)n =

  1. nι
  2. (n+2)ι
  3. (n-1)ι/(n+2)ι
  4. (n+2)ι/(n-1)ι
Categories
Mathematics

(n+1)n(n-1)/3.2.1 =

  1. (n+1)ι
  2. 3ι(n-2)ι/(n+1)ι
  3. (n+1)ι/3ι(n-2)ι
  4. (n-2)ι
Categories
Mathematics

(cos(x)-cos3x)/(sin3x-sin(x)) =

  1. cot2x
  2. tan2x
  3. csc2x
  4. sec2x
Categories
Mathematics

(A n B) n C =

  1. A n (B n C )
  2. A ∪ (B ∪ C )
  3. π
  4. A ∪ (B ∪ C )
Categories
Mathematics

(A ∪ B) ∪ C =

  1. A ∩ (B ∪ C )
  2. A ∪ (B ∪ C )
  3. π
  4. A ∪ (B ∪ C )
Categories
Mathematics

(22 1/2)° =

  1. π/2 radians
  2. π/4 radians
  3. π/8 radians
  4. 180π radians
Categories
Mathematics

” + ” is

  1. binary operation on R
  2. not a binary operation on R
  3. a binary operation in Qc
  4. not a binary operation in E