题目

Eleven leatherback turtles(凌皮龟) are swimming across the Pacific Ocean to the Galapagos Islands in a race that will be tracked online to draw attention to the serious situation of the endangered creatures. The turtles have been attached with satellite communication devices that give their positions, as they head South from their nesting sites on Costa Rica' s Playa Grande beach to their feeding grounds near the Galapagos, about 1,500km away. Online participants can choose a turtle and track its course at http://www.great turtlerace.com. The winner will be the one that travels furthest in 已知二阶矩阵M有特征值及对应的一个特征向量，并且矩阵M对应的变换将点变换成，求矩阵M．