一、由教学知识点引发的思考知识点1.秦九韶算法人教版教材中在这一节有个思考题,“用秦九韶算法求n次多项式f(x)=a_nx~n+a_(n-1)x~(n-1)+…+a_1x+a_0,当x=x_0(x_0是任意实数)时的值,需要多少次乘法运算,多少次加法运算?”一般情况下,是n次乘法运算和n次加法运算,这是由最高次项的次数所决定的.那么当此多项式缺项、首项系数为1或 First, the knowledge points triggered by the point of teaching knowledge 1. Qin Jiulu algorithm PEP textbooks in this section there is a question, “Qin Nguyen algorithm to find polynomials n times f (x) = a_nx ~ n + a_ (n -1)x~(n-1)+...+a_1x+a_0,when x=x_0 (x_0 is an arbitrary real number), how many multiplications, how many additions are needed?”Generally speaking, it is n Submultiplication operations and n addition operations, which are determined by the times of the highest subitem. Then when this polynomial is missing, the first coefficient is 1 or