This applet demonstrates the concept of limits graphically.
What is f(x) approaching as x approaches 9
what is f approaching as x gets close to 7 only for values less than 7 ( 6.8,6.9,6.99,6.999,6.9999 )[br]Same Question what is f approaching as x gets close to 7 only for values greater than 7 (7.1,7.05,7.01,7.001,7.0001)