Mathematics - Calculus - Pre-Calculus - Limits introduction - Getting Closer and Closer

Show a number line with the point x=2 highlighted. The student clicks buttons to approach 2 from the left: 1.9, 1.99, 1.999, 1.9999... and from the right: 2.1, 2.01, 2.001, 2.0001... For the function f(x)=(x²-4)/(x-2), show the output for each x value: f(1.9)=3.9, f(1.99)=3.99, f(1.999)=3.999, f(2.0