数学知识的产生,是由于实际的需要,或者是由于数学本身发展的需要.幂指数概念的扩张就是如此.人类的认识空间逐渐向宏观发展:最大的动物地球上现存的是鲸,它的体长数十米,即101米的数量级.最大的植物是红杉树,它高达数百米以上,即102米数量级.最深的海沟是马里亚纳海沟,深为11. The generation of mathematics knowledge is due to actual needs, or due to the need for the development of mathematics itself. The expansion of the concept of power exponents is such. The human understanding space gradually develops to the macro: the largest animal on the planet is the existing whales, its body It is tens of meters long, that is, in the order of 101 meters. The largest plant is the red fir tree, which is up to several hundred meters, ie, in the order of 102 meters. The deepest trench is the Mariana Trench, which is 11.