Damped system with feedback, exponential function, curve sketching, root of equations, first order equation.
[STEP II 1990 Question 7 (Pure)]
Substitution, first order equation.
[STEP I 1990 Question 7 (Pure)]
Forced system of first order equation, explicit solution.
[STEP II 1987 Question 6 (Pure)]
Underground Mathematics: Selected worked STEP questions
STEP Question database
University of Cambridge Mathematics Faculty: What do we look for?
University of Cambridge Mathematics Faculty: Information about STEP
University of Cambridge Admissions Office: Undergraduate course information for Mathematics
Stephen Siklos' "Advanced Problems in Mathematics" book (external link)
MEI: Worked solutions to STEP questions (external link)
OCR: Exam board information about STEP (external link)
AMSP (Advanced Maths Support programme): Support for University Admission Tests (external link)