What is the basic difference between domain and range? I sometimes struggle trying to determine the range of functions. Other than graphing, is there an "easy" way to find the range of functions?
Typically, one has a function written as y= f(x). To determine the domain, look for values of x for which f cannot be evaluated (divide by 0, take the square root of a negative number, etc.). To determine the range, try to solve the equation y= (x) for x, reversing the roles of x and y, so reversing domain and range.