Connect the ideas
Average change gives a secant gradient; a derivative gives a local tangent gradient.
Find a tangent point from f and its gradient from f′.
Classify stationary points by a sign change, not merely f′=0.
Model the objective in one variable and check the physical domain and boundaries.
Velocity is signed; speed and total distance are nonnegative.
Practice tests
Complete each paper and show your working.
Introduction to calculus — Topic test 1
10 questions · 48 marks · 65 minutes · Scientific calculator
Introduction to calculus — Topic test 2
10 questions · 52 marks · 65 minutes · Scientific calculator
Introduction to calculus — Topic test 3
10 questions · 52 marks · 65 minutes · Scientific calculator
Introduction to calculus — Topic test 4
10 questions · 49 marks · 65 minutes · Scientific calculator
Introduction to calculus — Topic test 5
10 questions · 56 marks · 75 minutes · Scientific calculator
