Limits, one idea at a time.
Ten short steps on a live graph, from “what does approaching mean?” to continuity. Then test yourself with quiz-style questions and worked steps.
A limit asks where the graph is heading
Slide x toward 2 from both sides and watch the height f(x). It closes in on 3. The filled dot at height 4 is f(2) itself, and the limit never looks at it: it only cares about x near 2, never x = 2.
2.9748
2.9975
2.9997
3.0003
3.0025
3.0252
Practice like it is the real quiz
Type your answer, or tap ∞, −∞ or DNE. Stuck? Open the steps one line at a time.
Quiz coming up and limits still feel slippery?
Bring your practice questions. We work through them together until every type feels routine.
Questions, answered.
Still unsure about something? Message us and you will hear back within a day.
See all questionsIn person, we meet at the SFU Burnaby campus or in a private meeting room near Brentwood in Burnaby. Online sessions run on Zoom. You choose when you book.
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Tell us within 24 hours and you get a full refund. No forms, no arguing.
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SFU Beedie accounting, finance, statistics and economics courses. The full list is on the Courses page. If yours is missing, message us and we will tell you within a day whether we can cover it.
Yes. Two or more students taking the same course can book together and each pays less per hour. Exam prep packages are also available before midterms and finals.
Yes. After each session you get an email report with what was covered, what to practise next and any files from the session. You can re-read them on your account page.