For many students who have had their academic plans disrupted due to the COVID-19 emergency, Distance Calculus may be the right program for you to keep your academic goals on track. During this COVID-19 emergency, Distance Calculus remains in full operation. You may enroll and start immediately with any course. Contact us to discuss how we can help. (Updated April 2020)

The Primitives of Precalculus
by Robert Curtis

Functions Without Algebraic Formulae - Functions Defined Only With Graphs

  • P2: Functions:
    • P2.6: Functions Without Algebraic Formulae:
      • P2.6.b: Functions Defined Only With Graphs:
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    Distance Calculus - Student Reviews

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    Date Posted: Jan 12, 2020
    Review by: Brian Finley
    Courses Completed: Calculus II
    Review: I took Calculus II through Distance Calculus and can't recommend it enough. Being able to take the course at my own pace while I was working full time was tremendously helpful, especially since I hadn't taken a math course for 5 years prior. The instruction was excellent and the software they used to teach the course was intuitive and facilitated the learning process very well. This calc II class enabled me to take multivariable calc, linear algebra, and real analysis at Harvard University's extension school, which ultimately qualified me for the economics PhD program that I will graduate from next year. 8 years on, I'm still grateful to Professor Curtis and Distance Calculus.



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    Date Posted: Jan 12, 2020
    Review by: Anonymous
    Courses Completed: Calculus I, Calculus II
    Review: I needed to brush up on my high school calculus and finally take Calc II before starting a graduate program that needed them as prereqs. This was perfect choice to fit in that summer. Got done at fast pace that I wanted and needed. Also had added bonus of one on one feedback and help when needed. Video lessons were better than many on campus instructors in large lecture settings. Recommend for anyone needing to satisfy prereqs at home institution.
    Transferred Credits to: University of Michigan



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    Date Posted: Jan 13, 2020
    Review by: Janice Flores
    Student Email: jflores35@knights.ucf.edu
    Courses Completed: Calculus II
    Review: I highly recommend this course! Dr. Curtis is the best teacher and is ALWAYS willing to work with you to make sure you understand the subject. It was definitely a positive experience and the credits were transferred to my University with no problems! I definitely do not regret it and I had doubts in the beginning but if I had to, I would do it all over again!
    Transferred Credits to: University of Central Florida