An explicit definition of a function f gives an algorithmic procedure, usually given by an algebraic formula, that produces the output (dependent variable) of f for a given input (independent variable); for example, f(x) = x2.
Golden Retrievers are 1 foot 9 inches tall to 2 feet tall. You can say they are of medium size. They weigh 55 to 75 pounds and live for 10 to 12 years. I hope this will help you. Regards, Perrie Jinnie Pet Grooming Tips
The average life span of your typical Golden Retriever is between 10 and 12 years, though a good number do survive until 14 and the oldest recorded Golden Retriever I could find was 19 1/2 years old!