Reciprocals
Given the function: f(x) = 2x + 1 Graph 1f(x)
Graph 1f(x)
Given f(x) = 2 x Graph 1f(x)
Sketch the graph Graph 1f(x)
Graph f (x) = 2xx 1
1. Find and sketch the vertical asymptote.
the place where the graph is undefined
where the denominator is zero
the graph will not cross the vertical asymptote
you can have more than one
2. Find and sketch the horizontal asymptote. you can have no more than one if the degree of the numerator is less than the denominator y = 0 is the asymptote
if degree of numerator is greater than the denominator there is no horizontal asymptote
if the degrees are equal the line y = a/b is the horizontal asymptote where a and b are the lead coefficients.
3. Find and plot the y intercept by evaluating f (0)
4. Find the x intercept by solving the numerator
5. Use sign analysis to determine where function is positive and negative.
6. Use smooth curves to complete graph.
And Now:
Exercise 10