Matlab 求反函数L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208);怎么 用Matlab求这个方程关于x的函数表达式Warning:finverse((42/625*x^2+207/5000*x-6151/10000)*a+(-49/250*x^2+227/10000*
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![Matlab 求反函数L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208);怎么 用Matlab求这个方程关于x的函数表达式Warning:finverse((42/625*x^2+207/5000*x-6151/10000)*a+(-49/250*x^2+227/10000*](/uploads/image/z/2998503-63-3.jpg?t=Matlab+%E6%B1%82%E5%8F%8D%E5%87%BD%E6%95%B0L%3D%280.0672%2Ax%5E2%2B0.0414%2Ax-0.6151%29%2Aa%2B%28-0.1960%2Ax%5E2%2B0.0227%2Ax-0.0863%29%2Ab%2B%28-10.5053%2Ax%5E2-57.6785%2Ax%2B90.6208%29%3B%E6%80%8E%E4%B9%88+%E7%94%A8Matlab%E6%B1%82%E8%BF%99%E4%B8%AA%E6%96%B9%E7%A8%8B%E5%85%B3%E4%BA%8Ex%E7%9A%84%E5%87%BD%E6%95%B0%E8%A1%A8%E8%BE%BE%E5%BC%8FWarning%3Afinverse%28%2842%2F625%2Ax%5E2%2B207%2F5000%2Ax-6151%2F10000%29%2Aa%2B%28-49%2F250%2Ax%5E2%2B227%2F10000%2A)
Matlab 求反函数L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208);怎么 用Matlab求这个方程关于x的函数表达式Warning:finverse((42/625*x^2+207/5000*x-6151/10000)*a+(-49/250*x^2+227/10000*
Matlab 求反函数
L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208);怎么 用Matlab求这个方程关于x的函数表达式
Warning:
finverse((42/625*x^2+207/5000*x-6151/10000)*a+(-49/250*x^2+227/10000*x-863/10000)*b-5913958145676909/562949953421312*x^2-4058763611051393/70368744177664*x+56638/625)
is not unique.
> In sym.finverse at 48
f =
-4*(-2536727256907120625+998356558020608*b+1820791255597056*a-(13800718275906375867974638161520230625+125344666461646867671547865747947520*b-106350444148448273144883445827108864*a-129875210286209433583753212461056*b^2-884278752305874134383232014090240*b*a+323127186425522414690436586143744*a^2+519934816499859715457632174080000*a*x-1516476548124590836751427174400000*b*x-81280821841904409399577804800000000*x)^(1/2))/(23643898043695104*a-68961369294110720*b-3696223841048068125)
结果怎么是这样呢?
Matlab 求反函数L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208);怎么 用Matlab求这个方程关于x的函数表达式Warning:finverse((42/625*x^2+207/5000*x-6151/10000)*a+(-49/250*x^2+227/10000*
syms L a b
solve('L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208)',x)
clear
clc
syms x a b
L=(0.0672*x^2+0.0414*x-0.6151)*a+(-0.1960*x^2+0.0227*x-0.0863)*b+(-10.5053*x^2-57.6785*x+90.6208)
f=finverse(L)