# When you use the quotient rule to find the derivative of a function, does the denominator of the function have to have a variable or can it be a constant number?

##### 1 Answer

Actually it is indifferent; at the end of the day you get the right answer even if you have a constant in the denominator and you use the Quotient Rule.

#### Explanation:

The denominator may or may not contain the variable you are deriving for.

Consider that the Quotient Rule deals specifically with this case, i.e., the derivation of a function such as:

In reality you could use the Quotient Rule even if in the denominator you have a constant (it takes only a bit more...steps):

for example:

use the Quotient Rule:

Otherwise you could see it as