It depends on what r stands for.
If r is the radius of a circle or sphere, then yes, it must be non-negative.
If r is one of the polar coordinates it can be zero, but not negative.
If r is the correlation coefficient, it can be zero or negative.
A typical formula for exponential decay is y(t) = c*exp(-r*t) , where r > 0. The domain is all reals, and the range is all positive reals, since a positive-base exponential always returns a positive value.
Absolute value is always the opposite of the number.
The absolute value will always be positive because if you think about it, the absolute value.
the absolute value of any number is always the positive value of that number absolute value of 0.4 = 0.4
The absolute value of a number is its distance from zero on the number line, so it is always non-negative. When you multiply two nonzero absolute values, you are essentially multiplying two non-negative numbers together. In multiplication, a positive number multiplied by a positive number always results in a positive number, hence the product of two nonzero absolute values is always positive.
the absolute value for a negative or positive value is always positive
No, the present value interest factor (PVIF) is not always negative; in fact, it is typically a positive value. The PVIF is calculated using the formula ( PVIF = \frac{1}{(1 + r)^n} ), where ( r ) is the interest rate and ( n ) is the number of periods. Since both ( (1 + r) ) and ( n ) are positive, the PVIF itself is also positive, representing the present value of future cash flows.
Yes, the absolute value for an negative number is always positive.
It's positive by definition. That's what the absolute value is.
Absolute value is always positive. * * * * * The pedantic answer is "non-negative".
Yes, always.
Absolute value is always positive. Absolute value is the distance away from zero. Ex: |-4| = 4 |4| = 4
Well, honey, the absolute value of a number is always positive, no matter what. It's like a magnet that repels negativity. So, no, it can't be both positive and negative at the same time. It's just not how math works, sweetie.
The coefficient of determination, denoted as (R^2), is always a non-negative value, regardless of whether the correlation coefficient (r-value) is negative or positive. The value of (R^2) indicates the proportion of the variance in the dependent variable that can be explained by the independent variable(s). While a negative r-value signifies an inverse relationship between the variables, (R^2) will still be a positive number, ranging from 0 to 1. Thus, a negative r-value does not imply a negative coefficient of determination.
The absolute value of a positive integer is always a positive integer. It represents the distance of that integer from zero on the number line, which is always a non-negative value. Therefore, it is not possible for the absolute value of a positive integer to be a negative integer.
No. The absolute value of a number is the value of the number ignoring the sign - it is always positive: The absolute value of a negative number is a positive number; The absolute value of a positive number is a positive number.
No. You have it backwards . . . . . the absolute value of a negative number is always a positive number.