Exam-Style Problems

โฌ… Back to Subchapter
Browsing as Guest. Progress, bookmarks and attempts are disabled. Log in to track your work.
Nov 2023 p13 q7
745

The function \(f\) is defined by \(f(x) = 1 + \frac{3}{x-2}\) for \(x > 2\).

(a) State the range of \(f\).

(b) Obtain an expression for \(f^{-1}(x)\) and state the domain of \(f^{-1}\).

Log in to record attempts.
Nov 2012 p12 q2
746

A function \(f\) is such that \(f(x) = \sqrt{\frac{x+3}{2}} + 1\), for \(x \geq -3\). Find

(i) \(f^{-1}(x)\) in the form \(ax^2 + bx + c\), where \(a, b\) and \(c\) are constants,

(ii) the domain of \(f^{-1}\).

Log in to record attempts.
Nov 2012 p11 q10
747

The function f is defined by \(f(x) = 4x^2 - 24x + 11\), for \(x \in \mathbb{R}\).

(i) Express \(f(x)\) in the form \(a(x-b)^2 + c\) and hence state the coordinates of the vertex of the graph of \(y = f(x)\). [4]

The function g is defined by \(g(x) = 4x^2 - 24x + 11\), for \(x \leq 1\).

(ii) State the range of \(g\). [2]

(iii) Find an expression for \(g^{-1}(x)\) and state the domain of \(g^{-1}\). [4]

Log in to record attempts.
Nov 2009 p12 q8
748

The function \(f\) is such that \(f(x) = \frac{3}{2x+5}\) for \(x \in \mathbb{R}, x \neq -2.5\).

Obtain an expression for \(f^{-1}(x)\).

Log in to record attempts.
June 2008 p1 q6
749

The function \(f\) is such that \(f(x) = (3x + 2)^3 - 5\) for \(x \geq 0\).

Obtain an expression for \(f^{-1}(x)\) and state the domain of \(f^{-1}\).

Log in to record attempts.
โฌ… Back to Subchapter Load more