It is important to remember that by knowing whether "a" is positive or negative, we know if the graph is above or below the graph (positive, above; negative, below). Remember that if your asymptote is a positive, but your graph is above it, there will be no x-intercept. Also, if your asymptote is negative, but your graph is below it, there will also be no x-intercept. Another way to remember that there is no x-intercept is if you, at any point of solving, have to log a negative--it is impossible. Helpful sayings also make your life easier like this one: the YaK died. This means that our asymptote will be Y=K (remember our skeleton: y=a*b^(x-h)+k)and our domain is unrestricted resulting in (-inf, inf).
No comments:
Post a Comment