MATLAB中fzero()的问题~P = 9.33; T = 300.2; n = 2; a = 4.17;b = 0.0371;R = 0.08206;V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)这个程序错在哪?为啥说我没有给参数赋值?(我的是6.5的MATLAB)Error using ==> fzeroFZERO cannot
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![MATLAB中fzero()的问题~P = 9.33; T = 300.2; n = 2; a = 4.17;b = 0.0371;R = 0.08206;V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)这个程序错在哪?为啥说我没有给参数赋值?(我的是6.5的MATLAB)Error using ==> fzeroFZERO cannot](/uploads/image/z/4517567-71-7.jpg?t=MATLAB%E4%B8%ADfzero%28%29%E7%9A%84%E9%97%AE%E9%A2%98%7EP+%3D+9.33%3B+T+%3D+300.2%3B+n+%3D+2%3B+a+%3D+4.17%3Bb+%3D+0.0371%3BR+%3D+0.08206%3BV%3Dfzero%28%27P%2AV%5E3-%28P%2An%2Ab%2Bn%2AR%2AT%29%2AV%5E2%2Ba%2An%5E2%2AV-a%2Ab%2An%5E3%27%2C0%29%E8%BF%99%E4%B8%AA%E7%A8%8B%E5%BA%8F%E9%94%99%E5%9C%A8%E5%93%AA%3F%E4%B8%BA%E5%95%A5%E8%AF%B4%E6%88%91%E6%B2%A1%E6%9C%89%E7%BB%99%E5%8F%82%E6%95%B0%E8%B5%8B%E5%80%BC%3F%28%E6%88%91%E7%9A%84%E6%98%AF6.5%E7%9A%84MATLAB%29Error+using+%3D%3D%3E+fzeroFZERO+cannot)
MATLAB中fzero()的问题~P = 9.33; T = 300.2; n = 2; a = 4.17;b = 0.0371;R = 0.08206;V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)这个程序错在哪?为啥说我没有给参数赋值?(我的是6.5的MATLAB)Error using ==> fzeroFZERO cannot
MATLAB中fzero()的问题~
P = 9.33;
T = 300.2;
n = 2;
a = 4.17;
b = 0.0371;
R = 0.08206;
V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)
这个程序错在哪?为啥说我没有给参数赋值?(我的是6.5的MATLAB)
Error using ==> fzero
FZERO cannot continue because user supplied expression ==> P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3
failed with the error below.
Error using ==> inlineeval
Error in inline expression ==> P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3
Undefined function or variable 'P'.
Error in ==> E:\MATLAB6p5\work\Untitled.m
On line 7 ==> V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)
MATLAB中fzero()的问题~P = 9.33; T = 300.2; n = 2; a = 4.17;b = 0.0371;R = 0.08206;V=fzero('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3',0)这个程序错在哪?为啥说我没有给参数赋值?(我的是6.5的MATLAB)Error using ==> fzeroFZERO cannot
clear
syms V
P = 9.33;
T = 300.2;
n = 2;
a = 4.17;
b = 0.0371;
R = 0.08206;
V=solve('P*V^3-(P*n*b+n*R*T)*V^2+a*n^2*V-a*b*n^3=0','V')