论文部分内容阅读
用空间向量来解决空间立体几何问题非常得心应手,比如证明平行、垂直以及求角、求距离等。但是,我们不能把眼光仅仅限制于这些问题的证明与求解。在运用空间向量解决问题时,其中也包含着许多数学思想的运用。一、方程思想求值例1已知正三棱柱ABC—A_1B_1C_1的侧棱长
Space vector to solve the problem of three-dimensional geometry is very handy, such as proof of parallelism, vertical and seeking angle, seeking distance. However, we can not look beyond the proof and solution of these problems. In the use of space vector to solve the problem, which also contains many mathematical ideas. First, the equation of thought Example 1 known is the triangular prism ABC-A_1B_1C_1 side edge length