https://learner.coursera.help/hc/requests/new
http://www.dessci.com/en/products/mathplayer/
https://www.coursera.org/
https://www.coursera.org/courses
https://www.coursera.org//about/
https://www.coursera.org//about/careers
https://www.coursera.org//about/people
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https://www.coursera.org/
https://www.coursera.org/account/profile
https://www.coursera.org/account/accomplishments
https://www.coursera.org/account/settings
https://class.coursera.org/datasci-002/class/preferences
https://www.coursera.org/uw
https://class.coursera.org/datasci-002/
https://class.coursera.org/datasci-002
https://class.coursera.org/datasci-002/questions
https://class.coursera.org/datasci-002/class/index
https://class.coursera.org/datasci-002/lecture/index
https://class.coursera.org/datasci-002/forum/index
https://class.coursera.org/datasci-002/assignment/index
https://class.coursera.org/datasci-002/quiz/index
https://class.coursera.org/datasci-002/human_grading/index
https://class.coursera.org/datasci-002/wiki/OptionalRealWorldProject
https://class.coursera.org/datasci-002/wiki/syllabus
https://class.coursera.org/datasci-002/wiki/courselogistics
https://class.coursera.org/datasci-002/wiki/ClassVirtualMachine
https://class.coursera.org/datasci-002/wiki/GithubInstructions
https://class.coursera.org/datasci-002/wiki/PythonResources
https://class.coursera.org/datasci-002/wiki/awssetup
https://class.coursera.org/datasci-002/quiz/index?quiz_type=survey
https://class.coursera.org/datasci-002/wiki/aboutus
https://learner.coursera.help/
https://class.coursera.org/datasci-002/forum/list?forum_id=10000&url=https%3A%2F%2Fclass.coursera.org%2Fdatasci-002%2Fassignment%2Fview%3Fassignment_id%3D21
https://class.coursera.org/datasci-002/forum/list?forum_id=10001&url=https%3A%2F%2Fclass.coursera.org%2Fdatasci-002%2Fassignment%2Fview%3Fassignment_id%3D21
https://class.coursera.org/datasci-002/help/programming?url=https%3A%2F%2Fclass.coursera.org%2Fdatasci-002%2Fassignment%2Fview%3Fassignment_id%3D21
https://github.com/uwescience/datasci_course_materials
https://github.com/uwescience/datasci_course_materials/blob/master/assignment2/matrix.db
http://www.sqlite.org/lang_corefunc.html
https://www.google.com/search?q=math+function+extensions+sqlite