求函数的高阶导数：[tex=4.929x1.357]4ZKCFb90wAFaa6PFgGDWdg==[/tex]， 求[tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]

已知[tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]存在，[tex=4.286x1.357]N4e4dKYNGeiFgRaGjOb8Ew==[/tex]求[tex=1.786x2.5]+sfv9fbaljqgKDIK5JrU9Y5Em4Qd79k9c+OoGz0cVHA=[/tex].

已知 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]存在，求 [tex=1.786x2.5]+sfv9fbaljqgKDIK5JrU9Y5Em4Qd79k9c+OoGz0cVHA=[/tex] : [tex=8.429x1.357]1eoK0XMrwmJm1NgodsGCBzitnaGL2ofy0SGzhJHukDw=[/tex].

设 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex] 存在，求下列函数的二阶导数[tex=4.571x1.357]mLCrkD8K3nj9GnRqHAP4YA==[/tex].

设 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex] 存在，求下列函数的二阶导数[tex=4.714x1.357]61Hx9nL+s45d5hD8q3NnZQ==[/tex].

设[tex=10.643x1.429]WSlAUy5l9EAUxxLjkXZaugWZmlSJ9UGVzMF0jVnqHz8qcoJkcpTzPPcdrLfnokhj[/tex]求[tex=6.357x2.786]ybep552s6B57scuqsHbergb29HCUEa1YakGGZOKorYrkp6eCa07ATusyM1N1QxpCp/BOr4LpNgeN6CWiF0V9zQ==[/tex] (设[tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]连续).

设 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex] 连续，则 [tex=6.0x2.643]NR6iiJaJGrwCzBozJPbnuSY5siYQf2p9UJm+am9isCKQ/P4Krb+3nvDmATBMZ+CJ[/tex][input=type:blank,size:6][/input]

设 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]存在, 求函数[tex=3.857x1.571]pd/plMQkXQ3PfpeV6Fg84Vs2l/iO/mVxnLSV84ezSd8=[/tex]的二阶导数.

求极限[tex=13.857x2.5]5AyX3idZzu+tFgxaGuP3jETcGl+pMfbOgzQfM8KMTZRsO17jAza11BKYmYibmVkPN+SZTCAE3Uvk7bzzH4nuuw==[/tex]（设[tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]在[tex=1.929x0.786]qBxW1Wco1uHB6W+VkCK3Kw==[/tex]点邻近连续）

设 [tex=2.429x1.429]79SmwT+8J9VTqKDgDEyFqyq/RV3jccSxj4F/gfqSdMY=[/tex]存在,求下列函数 [tex=0.5x1.0]yBR4oiFoTexGaFalQ7m8kg==[/tex]的二阶导数 [tex=1.786x2.571]eHmJ6WkcVxLNZ4Gfz3qUfm6er5h8xfY09ubZn/4hginoK6OMR4RaDKVmJkkGC3Na[/tex] :[tex=5.0x1.357]FJnmnaeuPtVDjMOB+OXTZ7at58LJr5YwZebnz+UqrDg=[/tex]