Mathematics 153
Notes from April 6, 2020, lecture session

Course schedule:
This is the file:
http://math.ucr.edu/~res/math153-2020/week2/math153scheduleS20.pdf 
This contains the due dates for the midterm exam, the final exam and the three quizzes.  Their relative shares of the grade are to be determined.  
Responses to questions:
Most of Monday's lecture was successfully recorded and posted to iLearn.  This is an mp4 file and should be playable with several different viewers (I generally use VLC Media Player, but there are probably others which are better).   
For each Unit ** of the course (where ** is a number between 01 and 14), the central items are a file named  history**.pdf  and the corresponding material in the course text. My lectures will be organized around the history**.pdf  files. The other history files (with letters after the unit number) are supplementary of varying importance.  In my summaries I will be more specifc about priorities for each unit.  Some of these files are absolutely essential and will be part of the lectures, while others are basically long footnotes, sometimes a little above the level of the course.  Often these files give examples of the sorts of problems from the lectures that one might find on quizzes or exams.
For each unit there will be exercises which are strongly recommended for working.  Solutions will be posted, but you should make a significant effort to work them on your own before consulting the solutions files.  Similar problems are likely to be on quizzes and exams.  You may ask either the teaching assistants or me if you want to check whether your solutions are correct or you have questions about the posted solutions.  The first wave of problems will be posted later this week.  There are also some exercises for which reading through the solutions will be enough.  
The example illustrating the Babylonian way of writing fractions at the end of Monday's lecture was rushed, and it will be discussed more thoroughly in the April 8 lecture.
Guide to files in Unit 01:
Illustrations or details to accompany the main file  history01.pdf  appear in the following files:
history01c.pdf                history01c.program.pdf
cuneiform.jpg                frustrum.pdf            seven-tenths.jpg
Worked out examples are presented in the following files:
history01a.pdf                history01b.pdf 
base60change1.pdf              base60change2.pdf     
degreeconversions.pdf 
More detailed (but lower priority) and background information on the main lecture topics appear in the following files:
history01d.pdf                concavity.pdf 
Usually this is at a higher level, but in some cases it is a review of basic items from algebra, precalculus or calculus.  
Files involving exercises will be added later.  Often they can be done using the same methods in the worked out examples, but some are definitely more challenging.