判别曲线[tex=4.143x1.429]pIWh6A1cn7l8Pp992ZRnEw==[/tex]的凹凸性[br][/br]
举一反三
- 判断下列曲线的凹凸性：[tex=4.143x1.429]xJdTrErK18BL7Unl0m/YL3LggWs51JmYNw7e7QIZAvY=[/tex]
- 求曲线[tex=4.143x1.429]pIWh6A1cn7l8Pp992ZRnEw==[/tex]的曲率以及在点[tex=2.286x1.357]Q31zUTZmPwwHO8bSBLtlYA==[/tex]的曲率半径.
- 判别曲线[tex=5.429x1.143]sF6QeFbHY0nT3l31H/soQGt2SLviurYJbxBG7y87rwk=[/tex]的凹凸性.
- 计算抛物线[tex=4.143x1.429]pIWh6A1cn7l8Pp992ZRnEw==[/tex]在它的顶点处的曲率.
- 证明下列函数都是调和函数:[br][/br][tex=4.214x1.429]LLmGjCY6neZFw6YYEJZk4eK+uFVyEorIXAsEm63HLXk=[/tex]和[tex=4.143x1.429]Af8Trl1F4BC7JfrD8WFztcl0TzOqckg02dE0+Paojjk=[/tex]