ジョンズ・ホプキンズ大学（Johns Hopkins University） による Precalculus: Periodic Functions の受講者のレビューおよびフィードバック

Excellent course. Trigonometric concepts that, in previous courses, had been intimidating, confusing and tedious became dramatically less so.

This is the second module of the specialization in calculus, go through these lectures in sequence since the concepts build on each other. The explanations are very clear and even the real world examples are superb. The motivation for learning all these concepts is baked into these lectures through the examples. Would definitely recommend solving the quizzes and sample problems. The professor also explains some historical math while going through the lectures such as where does 360degree come from. Thank you professor for all these lectures.

I enjoyed the course through and through. Joseph is a great instructor. I had not the slightest trouble videos are simple to comprehend and very to the point. I had no question but one which was responded to shortly after I brought it up in the discussion forums. I shall like to recommend this course to a friend.

The course is amazing. It helped me to understand the logic of periodic functions instead only memorize those functions. I think It would be great to provide additional material or books recommendations.

This course just like the preceding one is brilliant. After a very very very long time I can finally grasp the concepts undelrying the mathematics I studied at the high school.

The course is challenging. I learned a lot about trigonometric functions and their behavior. I can now understand periodic ODEs better now...

Absolutely loved this course. i recommend it to every beginner

Extremely well taught! Superb explanations and examples.

awesome and informative

Very usefull course

TEACHER IS TOO GOOD

effective course

I wish the forums would be a place of exchange of problems among students and professor.

Of the very few errors in the lectures, posting corrections might be valuable as to avoiding loss of hair.

I love the stories of the Japanese math teacher, cos strong, sine mother take the baby out. look at the moon.