| ( red = incorrect --> blue = correct ) |
| Errors to be corrected |
| Errors that have been corrected |
| page 150, exercise I.22.2, second question: the formulas should read tan((C-B)/2) et tan((C+B)/2) |
| page 153, exercise I.22.5: to show that Heron's formula implies formula I.22.7 is artificial and complicated. In fact, it is sufficient to show that the area is given by formula I.22.7 (exercise I.22.4) and also by Heron's formula (exercise I.22.6). |
| page 250: we present an inequality that we erroneously call Cauchy-Schwarz inequality. In fact, the Cauchy-Schwarz inequality is another one presented here : https://en.wikipedia.org/wiki/Cauchy%E2%80%93Schwarz_inequality |
| page 300, exercise II.10.2: You should find the polynomial x^2 - 1,84 x + 2,083. |
| page 304 and after ; the numbering of sections and exercises in lesson II.11 mistakenly repeat a number. The section trinomial equation in Greek mathematics should be numbered II.11.3b, and the second exercise II.11.2 should be numbered II.11.2b. |
| page 309: the first three references to formula (II.11.10) should be references to formula (II.11.9) |
| page 356, 4th paragraph: A consequence of Thales' theorem... They all become the points of line EG. |
| page 366, Exercise II.17.4 : the formulation should be "Could you derive a Pythagorean triplet ?" (and the answer is : no, not directly) |
| page 402, help to exercise on ladders: we arrive at a 4th degree equation for OH |
| page 452: The section II.28.2 Inferential statistics should have the number II.28.3 |