What is a domain in algebra?

Answer by  john11 (617)

The domain is the set of objects that map into a range using a function. For instance ,let y= x^2. Then the domain, or the values that can be plugged in to x is the set, (-infinity, +infinity). The range of y is: (0, infinity). The domain of log(x) is: (0, infinity); since if x=0, the range is not defined.

Answer by  robin99 (17)

To take the derivative of an exponential function, multiply it by the ln of the base (7) and then apply chain rule with the exponent. So the derivative is 18ln(7) * 7^(18x+25)

Answer by  VB (361)

In math, domain is the numbers that are allowed for a particular function. Example: f(x)=x+42 has a domain of all real numbers. g(x)=SquareRoot(x) has a domain of x>=0 (no negatives)