Increasing or decreasing
Practice determining where a function is increasing or decreasing using the sign of its derivative, and interpreting what a derivative's sign tells you in context — with full worked solutions.
Start practising → Formula sheet (PDF) ↗Sample questions
- Easy Reading increase/decrease from the gradient Calculator [3]
- Medium Increasing or decreasing? Calculator [4]
- Hard Where a cubic increases Calculator [4]
About this topic
These are original, exam-style questions written to match the IB Mathematics syllabus for Applications & Interpretation SL (syllabus 5.2). Every question has a full worked solution with mark allocations matching real IB marking schemes.
How to practise
- Open the question bank using the button above.
- Attempt the question, writing out your working.
- Reveal the full worked solution and compare your method step by step.
- Use the difficulty and calculator filters to focus on what you need most.