Terms of use

Effective October 1, 2026. Math Zen Practice is provided by Ivan Terekhin, trading as Trifoil Trailblazer.

Purpose

This tool provides five-question practice sets covering the power rule for derivatives and evaluating derivatives at a point. It is an educational practice tool, not an accredited course or exam service. It does not guarantee an exam result. Questions and automated checking may contain errors; report an issue through Support.

Use

Use the service lawfully and within its intended practice workflow. Do not attempt to access another person’s sessions, disrupt the service, or bypass access controls. Practice sessions expire and are not a permanent learning record. There are no purchases or paid upgrades inside this plugin.

Content and availability

The Math Zen name, interface and exercise software belong to their respective owners. You may use generated exercises for personal study. The service may be changed, suspended or discontinued. It is provided as available; nothing in these terms limits rights that cannot legally be excluded.

Privacy and support

Our privacy policy explains the data used to run practice sessions and optional usage counts. Questions: contacts@trifoiltrailblazer.com.