Skip to content

Course home

Sign up

3.2 Algebra and Functions (A-level only)

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970
Question 48

The function f f\,f is defined by

f(x)=3+ln⁡(5x−4)f(x) = 3 + \ln(5x - 4)f(x)=3+ln(5x−4), x∈Rx \in \mathbb{R}x∈R, x>45\displaystyle x > \frac{4}{5}x>54​

a.

Find the exact value of ff(1)ff(1)ff(1).

[2]
b.

Find an expression for f−1(x)f^{-1}(x)f−1(x).

[3]
Markscheme

3.2 Algebra and Functions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.2 Algebra and Functions (A-level only)

216 exam-style questions on WJEC A Level Maths 3.2 Algebra and Functions (A-level only), covering 3.2.1 Algebra and Functions (A-level only), 3.2.2 Algebra and Functions (A-level only), 3.2.3 Algebra and Functions (A-level only), 3.2.4 Algebra and Functions (A-level only), 3.2.5 Algebra and Functions (A-level only), 3.2.6 Algebra and Functions (A-level only), and 3.2 Algebra and Functions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank