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x > 0

x is greater than zero.

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Is the absolute value of a number is always nonnegative?

The absolute value of a number is always nonnegative.


What is nonnegative integer?

An integer is a whole number. Nonnegative mean not negative. A nonnegative integer is a whole number that is not a negative number. For example, 0, 1, 2, 3, 4, 5,....


What is the least nonnegative number?

1


How do you write in interval notation x is positive?

Positive: (0, infinity)Nonnegative: [0, infinity)Negative: (-infinity, 0)Nonpositive (-infinity, 0]


The nonnegative square root of a number?

The unique nonnegative square root of a nonnegative real number. For example, the principal square root of 9 is 3, although both -3 and 3 are square roots of 9.


How prove that variance-covariance matrix is nonnegative definite?

To prove that the variance-covariance matrix ( \Sigma ) is nonnegative definite, we can show that for any vector ( x ), the quadratic form ( x^T \Sigma x \geq 0 ). The variance-covariance matrix is defined as ( \Sigma = E[(X - E[X])(X - E[X])^T] ), where ( X ) is a random vector. By substituting ( x^T \Sigma x ) and using the properties of expected values and the definition of variance, we find that the expression equals the variance of the linear combination of the components of ( X ), which is always nonnegative. Thus, ( \Sigma ) is nonnegative definite.


What is an example of nonnegative integers?

The set of nonnegative integers is the set {0, 1, 2, 3, 4, 5, 6, ...} Each number in this set is an "example".


The absolute value of a number is always nonnegative true or false?

True


What is equal to two equals factors of my nonnegative number?

The square root.


What is one of two equal factors of a nonnegative number called?

The square root


How do you write a number divided by 31?

X/31 where X is the number


How do you write the sum of 4 and a number?

You call "a number" some variable name, for example "x", and then write:4 + x or: x + 4