inflection point

 

　y ={\displaystyle \textstyle \sum \limits _{k=0}^{n}a_{k}x^{k}=a_{n}x^{n}+a_{n-1}x^{n-1}+\cdots +a_{1}x+a_{0}=0}

   y' = ±1

 

          T.theodor           2022.7.23