• 2022-06-15
    设[tex=9.286x1.357]JdWYfGtp5xNLOqpyIVhygjmb5t6NhuQKLsfnOlCdADU=[/tex]其中[tex=1.643x1.357]QEos0FZVoxidwAY2Qi/JJQ==[/tex]二阶可导,[tex=2.786x1.357]XFjcQ0Gsv9lEUsq2Ht4/nQ==[/tex]具有二阶连续偏导数,求[tex=2.429x2.714]Hvc3DRViYQYrFC7OWnSXU8sm/Pmd4fpXiN2+clQYNt4lDMw+d/AngnlMuvf4C5Ve[/tex].