用导数定义求导数:[tex=4.5x2.643]nHHN4pLpj1G1uhQpyLUatowwPIwLnu3P84ibtuMgycE=[/tex],求[tex=2.214x1.429]U93ae75fuTDIyESpUsh0ZsDgKDbdXIcbBWW+plOs3hY=[/tex].
举一反三
- 用导数定义求导数:[tex=4.143x1.429]1FiRav2HSkaRpWL2j6qdIZ/Y5qmQq3yGO1flpDaPBlM=[/tex],求[tex=2.214x1.429]U93ae75fuTDIyESpUsh0ZsDgKDbdXIcbBWW+plOs3hY=[/tex]
- 设分段函数[tex=9.286x3.357]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU4Z64gRLKvhclOtJ9DnA6b4/YS4FyFCO3kr3jIMcLGPvSzXLe45CDGWyV6LoGPSy8NdJpbgM+MxElJ8lTaULxWl[/tex]求导数[tex=2.214x1.429]U93ae75fuTDIyESpUsh0ZsDgKDbdXIcbBWW+plOs3hY=[/tex].
- 若:(1)函数 f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]有导数,而函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]没有导数;(2)函数f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]没有导数,而函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]有导数;(3)函数f(x)在点[tex=3.714x1.357]7VByCIzkNySq3s2l9I6f5zccNJDeV+6SQrVr3iwjgB0=[/tex]没有导数及函数g(x)在点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]没有导数,则函数[tex=5.643x1.357]GmtX7Vop79exGU/rpqXUYw==[/tex]在已知点[tex=2.286x1.0]DSJKaWfJALImFxxTg/8qhA==[/tex]的可微性怎样?
- 设函数[tex=6.571x1.5]sE6Aas6x+mULF9vvpSmxZ+FhRWN40wttmb1RYCf053k=[/tex]。(1)求一阶导数[tex=2.214x1.429]iNxCerDUViDWTqUmlPeFSQ==[/tex];(2)证明[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex]在[tex=1.857x1.0]jl8uliKUg6qIeVpZvtGL9Q==[/tex]处不存在二阶导数。
- 用导数定义求导数:[tex=3.571x1.0]jvDXr141ASoMfv4ROQ2oXQ==[/tex],求[tex=1.357x2.429]cWJSHEWUlBufMLmyWX04BHmYWTZFPPC9q3vmT7wjxc8=[/tex].