A hint to get started
Read the same interval from a parabola and a sign line
Find the range of values of x such that .
CJC · Lecture · Example 1
Mark critical values and decide which are allowed before selecting intervals.
Read the worked solution
A hint to get started
Find the range of values of x such that x2+2x−15<0.
CJC · Lecture · Example 1
Mark critical values and decide which are allowed before selecting intervals.