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我们知道任何不等于零的数的-p(p为正整数)次幂,等于这个数的p次幂的倒数.即a-p=1/ap(a≠0,p为正整数).但在负指数的幂的运算中,有时候不太方便.
We know that any non-zero number of -p (p is a positive integer) power is equal to the reciprocal of the power of this number, ie ap = 1 / ap (a ≠ 0, p is a positive integer) Of the power of the operation, sometimes inconvenient.