matlab t=linspace(0,pi/10,1000); >> syms x y z% >> th=[x*(1+y/2)+z]*t;>> r=10*sqrt[2+2*cos(x*y*t)];r=10*sqrt[2+2*cos(x*y*t)];|Error:Unbalanced or unexpected parenthesis or bracket.这是怎么回事?

matlab t=linspace(0,pi/10,1000); >> syms x y z% >> th=[x*(1+y/2)+z]*t;>> r=10*sqrt[2+2*cos(x*y*t)];r=10*sqrt[2+2*cos(x*y*t)];|Error:Unbalanced or unexpected parenthesis or bracket.这是怎么回事?
matlab t=linspace(0,pi/10,1000); >> syms x y z% >> th=[x*(1+y/2)+z]*t;
>> r=10*sqrt[2+2*cos(x*y*t)];
r=10*sqrt[2+2*cos(x*y*t)];
|
Error:Unbalanced or unexpected parenthesis or bracket.这是怎么回事?

matlab t=linspace(0,pi/10,1000); >> syms x y z% >> th=[x*(1+y/2)+z]*t;>> r=10*sqrt[2+2*cos(x*y*t)];r=10*sqrt[2+2*cos(x*y*t)];|Error:Unbalanced or unexpected parenthesis or bracket.这是怎么回事?
>> syms x y t; % matlab 的中括弧有其他意义
r=10*sqrt(2+2*cos(x*y*t));
r =
10*(2+2*cos(x*y*t))^(1/2)