Applied Project in Sec.13.4, Calculus by Stewart Chinese version 克卜勒定律 Johannes Kepler stated the following three laws of planetary motion on the basis of massive amounts of data on the positions of the planets at various times. Kepler’s Laws A planet revolves around the sun in an elliptical orbit with the sun at one focus. The line joining the
Applied Project in Sec.14.4, Calculus by Stewart Chinese version 速比濤鯊魚皮系列第四代泳裝 Many technological advances have occurred in sports that have contributed to increased athletic performance. One of the best known is the introduction, in 2008, of the Speedo LZR racer. It was claimed that this full-body swimsuit reduced a swimmer’s drag
Discovery Project in Sec.12.4, Calculus by Stewart Chinese version 四面體的幾何學 A tetrahedron is a solid with four vertices, P ,Q , R and S ,and four triangular faces, as shown in the figure. Question 1: Let $v_1, v_2, v_3$ and $v_4$ be vectors with lengths equal to the areas of the faces opposite the vertices P, Q, R and S, respectively, and directions perpendicular
Discovery Project in Sec.12.4, Calculus by Stewart 英文版請見 The Geometry of a Tetrahedron 如圖所示，四面體是一個擁有4個頂點(P,Q,R,S)和四個三角面的固體。 問題1： 令 $v_1, v_2, v_3$ 和 $v_4$ 為向量, 其長度
Applied Project in Sec.6.5, Calculus by Stewart Chinese version 電影院要坐哪? A movie theater has a screen that is positioned $3$m off the floor and is $10$m high. The first row of seats is placed $3$m from the screen and the rows are set $1$m apart. The floor of the seating area is inclined at an angle of $\alpha=20^{\circ}$ above the horizontal and the distance