0580/43 Oct/Nov 2025, Question 13: Exponential Functions
Cambridge IGCSE Mathematics 0580 · Paper 43 (Extended) · Calculator · 3 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Point (5, 1024) lies on y = cˣ with whole-number c. Find the y-coordinate at x = −2.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 11024 = c⁵
- 2c = ⁵√1024 = 4
- 3y = 4⁻² = 1/16 = 0.0625
Answer0.0625 or 1/16
Stuck on a step? Read the free lesson: Exponential Functions
Practise more exponential functions questions
Real 0580 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on exponential functions
Also searched as: 0580/43/O/N/25 · 0580_w25_qp_43 · 0580 w25 43 · question 13.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.