A relation should have which of the following characteristics for it to be an equivalence relation?

1) Symmetric

ii) Reflexive

iii) Transitive

If we have two square matrices X and Y of order m, then under which of the following conditions Y is considered an inverse matrix of X?

Which of the following options is the correct integral value offdx/(1+tan x)?

What is the correct value of sin‘1 (sin 31'r/5) for the interval [-n/2, n/2]?

What will be the correct value when 2x sin (x2 +1) is integrated with respect to x?

For the polynomial equation x2 + 7x + 10, which of the following options are its correct roots?

_____ involves reentering data that was not typed or scanned correctly.

____ refers to how the internal statements of a method serve to accomplish the method's purpose.

____ is a measure of the strength of the connection between two program methods.

The least squares criterion is _____.

In a probability histogram, there is a correspondence between _______.