What are the important points needed to graph #f(x)= 3x²+x-5#?
1 Answer
are solutions of
is the minimum of the function
See explanations below
Explanation:
When you want to study a function, what is really important are particular points of your function: essentially, when your function is equal to 0, or when it reaches a local extremum; those points are called critical points of the function: we can determine them, because they solve :
Trivially,
is alternatively negative and positive, so we can deduce that
So :
is the minimum of the function.
Also, let's determine where
So :
are solutions of
\0/ Here's our answer !