kaixinxiangqian 发表于 2014-8-19 16:21

出小事啦！！！！！！matlab操作反求！

求
s=1.78*(0.15*sin(2*acos((h-0.6)/0.6))-0.3*acos((h-0.6)/0.6)+0.3*pi);


如果已知s 反求h
matlab 怎么做？

kaixinxiangqian 发表于 2014-8-19 16:24

求助啊啊啊啊啊啊啊啊啊啊啊啊啊啊

madio 发表于 2014-8-19 16:27

>> syms s h
>> solve(s==1.78*(0.15*sin(2*acos((h-0.6)/0.6))-0.3*acos((h-0.6)/0.6)+0.3*pi),h)
Warning: Explicit solution could not be found.
> In solve at 179

ans =

[ empty sym ]

>> solve(100==1.78*(0.15*sin(2*acos((h-0.6)/0.6))-0.3*acos((h-0.6)/0.6)+0.3*pi),h)

ans =

6.4286899949179473002327023689206 - 5.7100344868354339477137207870144*i
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