A-Level MathematicsYear 2017Q8
Page 06 MARKS 8. Sequences may be generated by recurrence relations of the form 1 20 n n u k u + = − , 0 5 u = where k ∈R. (a) Show that 2 2 5 20 20 u k k = − − . (b) Determine the range of values of k for which 2 0 u u < . 9. Two variables, x and y, are connected by the equation n y kx = . The graph of log2 y against log2 x is a straight line as shown. O 3 −12 log2 y log2 x Find the values of k and n. 2 4 5
Paper Source:NH_Mathematics_all_2017.pdf
Get full Socratic AI guidance on this question — free in the Applaa desktop app
Appy Buddy guides you step-by-step toward the answer without giving it away. Type your attempt and get instant, mark-scheme-aware clues that teach you to think like an examiner.
Applaa Desktop App
Join Applaa Community
Create your own games, learn AI concepts, program interactive apps, and share with a kid-safe community approved by parents. Free forever on Windows and Mac.
Download Free
Available for Windows and macOS · COPPA Compliant
Exam Specification Info
This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectMathematics
Official MarksVariable (2–6 marks)