Wiris

Documentation / WirisQuizzes

  • Demos
  • Visit our website
  • Contact us
  • MathType

    • WirisQuizzes

      • LearningLemur

        • CalcMe

          • MathPlayer

            • Store FAQ

              • VPAT for the electronic documentation

                • MathFlow

                  • BF FAQ

                    • Miscellaneous

                      • Wiris Integrations

                        • Home
                        • WirisQuizzes
                        • Advanced Validation Features
                        • Intervals
                        • Intervals

                        Example

                        Reading time: 1min

                        Consider the following question:

                        with correct answer:

                        To make formulas like (0,1) interpreted as intervals, we must select the corresponding checkbox in Input options > Input syntax.

                        Notice

                        If the Intervals option is selected, we can also use the reversed notation to exclude the endpoints from the corresponding set. Thus, [-2,+∞[ will also be accepted.

                        Finally, intervals are conceptually equivalent to inequalities, but internally (in the Algorithm), they are different data types. We need to use the Equivalent equations validation method if we want students to answer either intervals or inequations. Alternatively, student answers must be the same type as the correct answer.

                         

                        Was this article helpful?

                        Give feedback about this article

                        Related Articles

                        • Syntax

                        Example

                        Notice

                        Empowering STEM education

                        MathType

                        • Office Tools
                        • LMS
                        • XML
                        • HTML

                        WirisQuizzes

                        Learning Lemur

                        Integrations

                        Solutions

                        • Education
                        • Publishing houses – platforms and interactive
                        • Publishing houses – Print and digital
                        • Technical writers

                        Pricing

                        Downloads

                        Blog

                        • Success stories

                        About us

                        • Careers
                        • Partnership

                        Contact Us

                        Contact Sales

                        European union (European Regional Development Fund) and 1EdTech (TrustEd Apps Certified)
                        • Cookie Policy
                        • Terms of Use
                        • Privacy Policy / GDPR
                        • Student Data Privacy
                        • Compliance
                        • Cookie Settings

                        © Wiris 2026

                        Expand