• 2022-06-19
    已知函数[tex=4.643x1.286]Q2e9U1XyxLBMsCFsg3Cd2w==[/tex]满足方程[tex=14.714x2.357]V9fVXReHUrcmKJSTnoNlS/YIutsDa3VyMHeW/Ozlvu6aCOCl9nJxBO5q2LZN+RPOxwUpvCHg4ldmvdd8Hcew28x9yb69jwKzmlGwbdtDDWUGw93MM62pkM2eAynmjk0N/sxrFZ2XYj0wg+7sbO85VWkIOu0u8hq23RoEcPxdGtbmSIVZzBIC+eurje1bwbcHiqIDmyQ3+hN4WEpSf6L3Tg==[/tex],(1)试选择参数[tex=0.643x1.286]vYiGJJ9TAtvnQmM1PsOB8g==[/tex],[tex=0.643x1.286]mI2l8V/Tmuo7C2MtPPAzQQ==[/tex],利用变换[tex=9.643x1.286]lG//pp3jkxJROCr2FFJb/VcM1cOO7R0vMtobdoLdeEi+vNdPAOxvQ6GzArfBWRPn[/tex]将原方程变形,使新方程中不出现一阶偏导数项;(2)再令[tex=4.071x1.286]/GQ8YWkvfBP7euDv9qzboA==[/tex],[tex=4.071x1.286]6B4xoPjdd1wVwLrSNH7srQ==[/tex],使新方程变换形式。
  • 举一反三