问题标题:
S=dsolve('Dw=0.2/(w^2*cos(85/180*pi-w*t)-sin(85/180*pi-w*t))','w(0)=0')等了半个小时都没出结果
问题描述:
S=dsolve('Dw=0.2/(w^2*cos(85/180*pi-w*t)-sin(85/180*pi-w*t))','w(0)=0')等了半个小时都没出结果
宋国栋回答:
w(0)=0,改w=0;
高道祥回答:
改了之后出错了.....S=dsolve('Dw=0.2/(w^2*cos(85/180*pi-w*t)-sin(85/180*pi-w*t))','w=0')???Errorusing==>dsolve>mupadDsolveat215UnabletosolveODE:Numberofequationsdiffersfromnumberoffunctions[ode::makeComponents]Errorin==>dsolveat114[R,var_list,order]=mupadDsolve(ignoreConstraints,varargin{1:narg});
宋国栋回答:
symt;w=0;S=dsolve('Dw=0.2/(w^2*cos(85/180*pi-w*t)-sin(85/180*pi-w*t))','t');但是会出现Warning:Explicitsolutioncouldnotbefound.也就是没解。
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