Free
$0
Try the analyzer with a limited number of explanations.
- Graphs of f(x), f'(x), and F(x)
- 3 explanations per session
- No lessons -- the rules and laws are on Plus
- No information about the functions you analyze, including discontinuities and asymptotes
Plus
$10/month
Full explanations for every function you analyze.
- Unlimited step-by-step explanations
- Information about the functions you analyze, including discontinuities and asymptotes
- Full graph detail
- The whole course: every rule, worked examples, marked practice
Pro
$20/month
Everything in Plus, with guided practice.
- Everything in Plus
- Generated problems to attempt, with explanations
- A history of every function you have analyzed
Unlimited
$189 one-time
Pay once for lifetime access, including bonus features.
- Everything in Pro, forever
- Bonus features as they ship
- No recurring charge
An account comes first, and it is free. No card is asked for anywhere on this site yet -- paying for a plan is the one part still to be built.