How do you graph #f(x)= (x^3+1)/(x^2-4)#?
1 Answer
Graph of
graph{(x^3+1)/(x^2-4) [-40, 40, -20,20]}
Explanation:
There is no secret to graph a function.
Make a table of value of
To be more accurate, take a smaller gap between two values of
Better, combine with a sign table, and/or make a variation table of f(x). (depending on your level)
Before to start to draw, we can observe some things on
Key point of
Take a look to the denominator of the rational function :
Remember, the denominator can't be equal to
Then we will be able to draw the graph, when :
We name the two straight lines
Root of
Then :
Note :
N.B : J'ai hésité à te répondre en français, mais comme nous sommes sur un site anglophone, je prefère rester dans la langue de Shakespeare ;) Si tu as une question n'hésite pas!