BARC EE : Engineering Mathematics Quiz-2

If a vector  is solenoidal then A is:

The principal argument of the complex number is

Consider a surface (S) which is function of x, y and z given as  its normal vector at (1, 1, 1) is

The function f(x) =  has

When the correlation coefficient r = ±1, then two regression lines are

The lowest Eigen value of the 2 × 2 matrix  is

If probability that husband will be alive 20 years form no = 0.8 and probability that wife will be alive 28 years from now = 0.9, then at least one will be alive after 20 years is:

Value of 2A¹⁰ – 18A⁹ + 40A⁸ – 25A⁷ + 9A⁶ – 20A⁵ + 13A⁴ – 9A³ + 20A² – 10A is _________, if .

When Binomial distribution is used in a limiting form is i.e., (n → ∞)

The solution of initial value problem; , where u(x, 0) = 6e^–3x is