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Joseph W. Cutrone, PhD

This course helps to build the foundational material to use mathematics as a tool to model, understand, and interpret the world around us. This is done through studying functions, their properties, and applications to data analysis. Concepts of precalculus provide the set of tools for the beginning student to begin their scientific career, preparing them for future science and calculus courses. This course is designed for all students, not just those interested in further mathematics courses. Students interested in the natural sciences, computer sciences, psychology, sociology, or similar will genuinely benefit from this introductory course, applying the skills learned to their discipline to analyze and interpret their subject material. Students will be presented with not only new ideas, but also new applications of an old subject. Real-life data, exercise sets, and regular assessments help to motivate and reinforce the content in this course, leading to learning and mastery.

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What's inside

Syllabus

Module 1: Periodic Functions
In this course, we expand our collection of functions which we can use to model by studying periodic functions. Periodic functions are functions whose graphs repeat themselves after a certain point. It is natural to study periodic functions as many natural phenomena are repetitive or cyclical: the motion of the planets in our solar system, days of the week, seasons, and the natural rhythm of the heart. Thus, the functions introduced in this course add considerably to our ability to model physical processes. In this module, we begin by learning methods of measuring angles.
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Module 2: Right Triangle Trigonometry
Many common phenomena have oscillatory or periodic behavior. To model this behavior requires an understanding of functions that exhibit periodic behavior like sine, cosine, and tangent. These functions are introduced using right triangles in this module, which then lets us explore their algebraic relations.
Module 3: Sine and Cosine as Periodic Functions
Sine and cosine are now introduced using the unit circle, which is the circle centered at the origin with radius one. This definition of our key periodic functions extends the definition originally introduced with right triangles.
Module 4: The Tangent and Other Periodic Functions
The most basic periodic functions, sine and cosine, were defined for all real numbers. We now study their quotients and reciprocals. However, care must be taken to ensure we do not divide by zero. In this module, we will complete our catalog of periodic functions
Module 5: (Some) Identities of Periodic Functions
In an effort to simplify the work involving our periodic functions, we introduce common identities. This dramatically increases their usefulness in applications. This module will emphasize the development of a small core of identities that are continually needed and can be used to determine a much larger collection. While the number of identities is small in this module, an understanding of these and how to derive others from them is essential for success as you continue your studies.

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Develops the mathematical skills needed for science and computer science, which are in high demand in the job market
Uses real-life data and examples to make the material relevant and engaging
Suitable for students with diverse backgrounds and interests in science, math, or technology
Provides a solid foundation for students who plan to pursue further studies in mathematics or related fields
Covers a range of topics, including functions, properties, and applications to data analysis
Taught by an experienced instructor with a strong reputation in the field

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Reviews summary

Precalculus: well-received trig & periodic functions course

According to students, this course in precalculus covers periodic trigonometric functions and is largely positive. Students found it challenging but learned trigonometric concepts well and say the course is well-designed and well-taught. Instructors provide clear explanations, examples, and stories to help students understand. The course uses video lessons, quizzes, assignments, and discussion forums to facilitate learning. Be aware that some quizes may have errors.
Well-designed course with helpful resources
"Outstanding teacher and well designed online course."
"The course is amazing. It helped me to understand the logic of periodic functions instead only memorize those functions."
"It requires a good mathematical background, and it does not include introductory concepts."
Engaging and knowledgeable instructor
"I enjoyed the course through and through. Joseph is a great instructor."
"TEACHER IS TOO GOOD"
"Thank you very much for your teaching, Sir! Your lectures are always clean and clear."
Clear explanations and examples
"The explanations are very clear"
"Extremely well taught! Superb explanations and examples."
"The course is challenging. I learned a lot about trigonometric functions and their behavior."
Occasional errors in quizzes
"s​ome quizes had some errors"
"I felt there was a gap between what was taught and what was tested."
"I think a couple of the test/quiz questions were not fairly graded."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Precalculus: Periodic Functions with these activities:
Identify potential mentors in the field of mathematics
Build connections with experienced professionals who can provide guidance, support, and encouragement throughout your learning journey.
Browse courses on Mentorship
Show steps
  • Attend conferences and workshops
  • Reach out to professors and industry experts
  • Join professional organizations
  • Explore online platforms
  • Ask for recommendations from peers
Volunteer at a local math museum or science center
Connect with others who share your interest in mathematics, gain practical experience, and make a meaningful contribution to your community.
Browse courses on Precalculus
Show steps
  • Research local math museums or science centers
  • Contact the organization to inquire about volunteer opportunities
  • Complete the application process
  • Attend training and orientation
  • Fulfill your volunteer duties
Gather a collection of resources on trigonometric functions
Organize and expand your knowledge of trigonometric functions by compiling a comprehensive collection of resources.
Browse courses on Trigonometry
Show steps
  • Identify different types of resources
  • Search for books, articles, videos, and websites
  • Organize the resources into categories
  • Annotate the resources with brief descriptions
  • Share the collection with others
Four other activities
Expand to see all activities and additional details
Show all seven activities
Solve problems involving periodic functions
Sharpen your problem-solving skills and deepen your understanding of periodic functions by working through practice problems.
Browse courses on Problem Solving
Show steps
  • Review the concepts of periodic functions
  • Gather practice problems from the textbook or online resources
  • Solve the problems using appropriate methods
  • Check your answers and identify areas for improvement
  • Repeat until you are confident in solving a variety of problems
Design a lesson plan on periodic functions
Develop your teaching skills and deepen your understanding of periodic functions by creating a comprehensive lesson plan.
Browse courses on Lesson Planning
Show steps
  • Review the concepts of periodic functions
  • Identify the learning objectives for the lesson
  • Choose appropriate activities and materials
  • Develop a detailed lesson plan
  • Share your lesson plan with others for feedback
Create a visual representation of a periodic function
Reinforce your understanding of periodic functions by visualizing them in a creative and engaging way.
Browse courses on Periodic Functions
Show steps
  • Choose a periodic function to represent
  • Determine the amplitude, period, and phase shift of the function
  • Create a visual representation using graphing software or other tools
  • Label the key features of the graph
  • Write a brief explanation of how the graph represents the function
Tutor fellow students in precalculus functions
Enhance your own understanding and build confidence by helping others master the concepts of precalculus functions.
Browse courses on Trigonometry
Show steps
  • Offer your services as a tutor
  • Identify students who need help
  • Prepare lesson plans or materials
  • Meet with students regularly to provide guidance and support
  • Evaluate students' progress and provide feedback

Career center

Learners who complete Precalculus: Periodic Functions will develop knowledge and skills that may be useful to these careers:
Data Analyst
As a Data Analyst, your work revolves around studying and interpreting data, helping turn raw data into meaningful insights to help businesses make more informed decisions. Your knowledge of periodic functions aids in analyzing cyclical data to find trends and patterns. This course will also provide a foundation for calculus, later assisting you in more complex data analysis using the principles of calculus and periodic functions together.
Actuary
Actuaries are professionals who use mathematical and statistical techniques to quantify and manage risk. In this role, employers seek candidates with strong analytical and problem-solving skills, for which this course builds a foundation. Additionally, a portion of actuarial work involves the analysis of financial data, a field where periodic functions are used to analyze and forecast repetitive or cyclical trends in financial markets.
Operations Research Analyst
Operations Research Analysts design and analyze mathematical models to help businesses make better decisions about resource allocation, scheduling, and more. This course provides an introduction to the mathematical tools and techniques used extensively by Operations Research Analysts and can help you develop foundational skills to move into this field.
Financial Analyst
Financial Analysts use complex modeling techniques and periodic functions to analyze and forecast market performance, analyze companies, and make sound investment decisions. This course can help you begin building the skills to make data-driven recommendations and support financial decisions.
Software Engineer
Software Engineers are in high demand and design, develop, and maintain software applications. This course can be an asset to Software Engineers in many different industries who may need to analyze and model cyclical data.
Biostatistician
Biostatisticians use statistics for the analysis and interpretation of biological data. This course can be helpful in building a foundation for further study in the field of biostatistics.
Market Researcher
Market Researchers study and interpret market data to help businesses make decisions. Periodic functions are often used in market research to analyze seasonal trends and patterns.
Epidemiologist
Epidemiologists study the causes of disease and other health problems in populations. They use statistical techniques to analyze data and identify trends. This course can help Epidemiologists build a foundation for using periodic functions to analyze cyclical data, such as the spread of diseases.
Meteorologist
Meteorologists study the atmosphere and its interactions with the Earth's surface. Periodic functions are often used to model weather patterns and forecast weather conditions.
Civil Engineer
Civil Engineers design and build infrastructure projects, such as roads, bridges, and buildings. Periodic functions can be used to analyze and model the behavior of these structures under different conditions.
Mechanical Engineer
Mechanical Engineers design and build machines and other mechanical devices. Periodic functions can be used to analyze and model the behavior of these machines under different conditions.
Electrical Engineer
Electrical Engineers design and build electrical systems. Periodic functions can be used to analyze and model the behavior of these systems under different conditions.
Chemical Engineer
Chemical Engineers design and build chemical plants and other chemical processes. Periodic functions can be used to analyze and model the behavior of these processes under different conditions.
Nuclear Engineer
Nuclear Engineers design and build nuclear power plants. Periodic functions can be used to analyze and model the behavior of these plants under different conditions.
Petroleum Engineer
Petroleum Engineers design and build systems to extract oil and gas from the Earth. Periodic functions can be used to analyze and model the behavior of these systems under different conditions.

Reading list

We've selected eight books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Precalculus: Periodic Functions.
Comprehensive textbook that covers all the major topics in precalculus, including periodic functions. It is well-written and provides plenty of examples and exercises to help students learn.
Classic calculus textbook that provides a comprehensive overview of the subject. It is well-written and provides plenty of examples and exercises to help students learn.
Well-written and accessible textbook that covers all the major topics in precalculus, including periodic functions. It good choice for students who are looking for a book that is easy to read and understand.
Comprehensive textbook that covers all the major topics in college algebra and trigonometry, including periodic functions. It is well-written and provides plenty of examples and exercises to help students learn.
Well-written and accessible textbook that covers all the major topics in algebra and trigonometry, including periodic functions. It good choice for students who are looking for a book that is easy to read and understand.
Unique and innovative approach to trigonometry that emphasizes the unit circle. It good choice for students who want to learn trigonometry in a more visual and intuitive way.
Comprehensive study guide that covers all the major topics in precalculus, including periodic functions. It is well-written and provides plenty of practice problems to help students learn.

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