将这个表达式输入到matlab,怎么写
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/06/25 02:50:08
将这个表达式输入到matlab,怎么写
c=(l^2/2*(sin(a)-a*cos(a))-r^2*(2/3*sin(a)^3+cos(a)^2*sin(a)-a*cos(a)))/(2*r*a*(1+2*cos(a)^2)-3*r*cos(a)*sin(a))
出现提示Error:Incomplete or misformed expression or statement.
c=(l^2/2*(sin(a)-a*cos(a))-r^2*(2/3*sin(a)^3+cos(a)^2*sin(a)-a*cos(a)))/(2*r*a*(1+2*cos(a)^2)-3*r*cos(a)*sin(a))
出现提示Error:Incomplete or misformed expression or statement.
![将这个表达式输入到matlab,怎么写](/uploads/image/z/30871-55-1.jpg?t=%E5%B0%86%E8%BF%99%E4%B8%AA%E8%A1%A8%E8%BE%BE%E5%BC%8F%E8%BE%93%E5%85%A5%E5%88%B0matlab%2C%E6%80%8E%E4%B9%88%E5%86%99)
syms l a r
>> c=(l^2/2*(sin(a)-a*cos(a))-r^2*(2/3*sin(a)^3+cos(a)^2*sin(a)-a*cos(a)))/(2*r*a*(1+2*cos(a)^2)-3*r*cos(a)*sin(a))
c =
-(r^2*(cos(a)^2*sin(a) - a*cos(a) + (2*sin(a)^3)/3) - (l^2*(sin(a) - a*cos(a)))/2)/(2*a*r*(2*cos(a)^2 + 1) - 3*r*cos(a)*sin(a))
>> c=(l^2/2*(sin(a)-a*cos(a))-r^2*(2/3*sin(a)^3+cos(a)^2*sin(a)-a*cos(a)))/(2*r*a*(1+2*cos(a)^2)-3*r*cos(a)*sin(a))
c =
-(r^2*(cos(a)^2*sin(a) - a*cos(a) + (2*sin(a)^3)/3) - (l^2*(sin(a) - a*cos(a)))/2)/(2*a*r*(2*cos(a)^2 + 1) - 3*r*cos(a)*sin(a))