DATE | WEB LESSON | CHANGE |
January 13, 2021 | Parallel and Perpendicular Lines | Add the word ‘distinct’ in two places. |
January 1, 2021 | Quadratic Functions and the Completing the Square Technique |
Typos: change ‘can be real number’ to ‘can be any real number’; change ‘hold water’ to ‘holds water’; change $\,a(h-k)^2 + k\,$ to $\,a(x-h)^2 + k\,$; change $\,-\frac{20}{29}\,$ to $\,-\frac{29}{20}\,$ |
December 30, 2020 | Equations of Simple Parabolas | Typo: change ‘the the parabola’ to ‘then the parabola’ |
December 27, 2020 | Parabolas | Typo: change ‘parabola nets narrower’ to ‘parabola gets narrower’ |
November 30, 2020 | Simple Word Problems Resulting in a System of Equations | Change ‘in the following example’ to ‘with the following example’. |
December 12, 2020 | $\rm\TeX\,$ Commands Available in MathJax | Corrected definitions of supremum and infimum. |
November 30, 2020 | Measures of Spread | Typo: replace $\,x_1\,$ with $\,x_i\,$ in the sentence beginning ‘A reasonable idea is to...’. |
November 14, 2020 | Advanced Set Concepts | Replace ‘alternately’ with ‘alternatively’. |
November 9 and 11, 2020 |
Composition of Functions
, Graphical Interpretations of Sentences Like $\,f(x) = g(x)\,$ and $\,f(x) > g(x)\,$, and Graphical Interpretations of Sentences Like $\,f(x) = 0\,$ and $\,f(x) > 0\,$ |
Typos: change ‘Graphs of Function’ to ‘Graphs of Functions’ in beginning link |
November 7, 2020 | Basic Models You Must Know |
Typos: change ‘Graphs of Function’ to ‘Graphs of Functions’ in beginning link; changed ‘dom’ to ‘ran’ for cubing function; correct symbolic statement of domain for absolute value function; change ‘functions’ to ‘function’: ‘Every constant functions graphs as...’ |
November 2, 2020 | Compound Interest Formula | Typo: changed ‘years’ to ‘year’ (singular) in the Compound Interest Formula box. |
October 29, 2020 | Arithmetic and Geometric Sequences | Changed 12 to 12.5 (twice) in geometric series example. |
October 19, 2020 | More on Exterior Angles in Triangles | Changed ‘with respect to $\,\angle C\,$’ to ‘with respect to the exterior angle at $\,\angle C\,$’. |
October 17, 2020 | Practice with Two-Column Proofs | Typo (two places): change ‘REASONS columns’ to ‘REASONS column’ (singular). |
October 11, 2020 | Relationships Between Angles and Sides in Triangles | Typo: changed ‘$\,B\Leftarrow A\,$’ to ‘$\,A\Leftarrow B\,$ (that is, $\,B\Rightarrow A\,$)’. |
October 11, 2020 | Triangle Congruence | Changed ‘alternately’ to ‘alternatively’. |
October 11, 2020 | Angles: Complementary, Supplementary, Vertical, and Linear Pairs | Removed the cursor from the vertical angle image. |
October 3, 2020 | Introduction to the Two-Column Proof | Typo: changed ‘in written in’ to ‘is written in’. |
October 3, 2020 | Proof Techniques | Typo: changed ‘the only time than an’ to ‘the only time that an’. |
September 28, 2020 | Quadrilaterals | Changed ‘containing’ to ‘connecting’ in the definition of convex; much clearer. |
September 19, 2020 | More Practice with Function Notation | Missing factor of $\,2\,$ in displayed equation; corrected in online (not print) version. |
September 14, 2020 | Finding Slant Asymptotes | Added a ‘real-life’ example of a slant asymptote to online version, per user request. |
September 14, 2020 | Finding Vertical Asymptotes | Added ‘real-life’ examples of vertical asymptotes to online version, per user request. |