ECZ 2020 · GCE Paper 1 — Relations and Functions
A function f is defined by f(x) = 2x - 5. Find (b) ff-1(2),
- A. 2
- B. -3
- C. 9
- D. 72
Verified working — step 1
f(f-1(2)) = 2.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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