f(x)= the function you’re graphing
c= the x-value you’re approaching
L= the y-value that the function is headed towards
To find limits from a graph, trace along the graph until you reach the stated x-value (c). What y-value does your function appear to be headed toward?
If f(x) increases or decreases without bound (like it does near a vertical asymptote), the limit technically does not exist. However, it can be written that the limit is equal to positive or negative infinity, depending on if your function is increasing or decreasing.
c= the x-value you’re approaching
L= the y-value that the function is headed towards
To find limits from a graph, trace along the graph until you reach the stated x-value (c). What y-value does your function appear to be headed toward?
If f(x) increases or decreases without bound (like it does near a vertical asymptote), the limit technically does not exist. However, it can be written that the limit is equal to positive or negative infinity, depending on if your function is increasing or decreasing.