Accedmychevron_right11thchevron_rightmathchevron_rightTheory Of Quadratic Functionschevron_rightExercise 3.1

Key rules

For real bb:

  • If b0b\ge 0 then:
A=bA=b or A=b|A|=b\Rightarrow A=b\ \text{or}\ A=-b
  • If b>0b>0 then:
A<bb<A<b|A|<b\Rightarrow -b<A<b A>bA>b or A<b|A|>b\Rightarrow A>b\ \text{or}\ A<-b