2022 ASRJC J2 MYCT P1 Q8
The function $\text{f}$ is defined by
$\text{f}:x\mapsto 1+ax-{{x}^{2}}$, $x\in \mathbb{R}$, $x\le k$
where $a$ is a positive constant.
(i)
Explain with a sketch why the largest value of $k$ for which ${{\text{f}}^{-1}}$ exists is $\frac{a}{2}$.
With this value of $k$, find ${{\text{f}}^{-1}}$ in a similar form.
[5]
(ii)
If $k=1$ and $a=2$, find the set of values of $x$ for $\text{f }{{\text{f}}^{-1}}\left( x \right)={{\text{f}}^{-1}}\text{f}\left( x \right)$.
[1]
(iii)
The function $\text{g}$ is defined by
$\text{g}:x\mapsto 2+2x-{{x}^{2}},\text{ }x\in \mathbb{R},\text{ }0\le x\le 1$.
It is also given that $\text{g}\left( x \right)=\text{g}\left( x+2 \right)$ for all real values of $x$.
Sketch $y=\text{g}\left( x \right)$ for $0\le x\le 5$.
[2]
Suggested Video and Handwritten Solutions
Our H2 Math Tuition includes
- Question Bank with Video solutions to 1400+ questions
- Online Portal
- H2 Math Summary Notes
- Structured Curriculum and Notes
Our H2 Math Tuition includes
- Question Bank with Video solutions to 1400+ questions
- Online Portal
- H2 Math Summary Notes
- Structured Curriculum and Notes
Share with your friends!
- No charge
- Unsubscribe anytime
Continue reading
Maximizing June Holidays: Is Joining a Crash Course Necessary?
As June holidays approach, students find themselves at a crucial juncture in their academic journey. With the semester winding down and exams looming on the horizon, the pressure to excel
5 Exam Preparation Tips: How We Help Students Excel in Exams
In the ever-evolving landscape of education, where academic success is often measured by performance in exams, the need for effective test preparation has never been more critical. Students face a
List MF 27
What is the MF 27? The MF 27, set to replace the MF 26 from 2025, is a comprehensive formula sheet developed by the Ministry of Education Singapore in collaboration