66.3 绘图-参数方程和隐函数 1.绘图 （1） x=(1+cos u)cos u y=(1+cos u)sin u z=sin u （2）根据以下公式绘制平面曲线，其中a为你学号的后两位；66.4 程序纠错 v=0:0.1:100;A=[v/30,(2.87-4*v/30),(5.96-8*v/30),(8.97-12*v/30)];B=[0,(2.87-5*v/30),(5.95-...
syms y u t s Y F F = laplace('4*diff(y(t),t) + y(t) - 3*2',s)And it gives me this error:Error using sym>convertChar (line 1821) Character vectors and strings in the first argument can only specify a variable or number. To evalu...
我用楼主的代码在6.5上求解没任何问题，输出结果见后；但是在R2008b求解卡在solve那句，很长时间算不出来，后来被我中断了。下面这句用的时间也比较长，但是能算出来，也并没有见到楼主贴出的错误：f=int(s^2,t,0,th*82/360)+int((s-h)^2,t,268*th/360,th);th = 360 h = 51.42...
In particular, if the number of sign changes is zero or one, the number of positive roots equals the number of sign changes." You can also use a varition of this rule to count the number of negative roots, but if we can count the number of positive roots accurately, then the number ...
每次迭代到102次就自动停止,提示Optimization terminated: average change in the spread of Pareto solutions less than options.FunctionTolerance. Constraints are not satisfied within constraint tolerance.希望知道的吧友给予解答 分享2赞 matlab吧 遗忘千年FAN 调压调速系统仿真遇到以下情况,怎么解决 The following ...
Suppose I asked you to work with the sequence formed as 2*n*F_n + 1, where F_n is the n'th Fibonacci number? Part of me would not be surprised to find there is nothing simple we could do. But, then it costs nothing to try, to see where MATLAB can take me in an explorative...
solve equation for variable and how to get output as number not as substituted form x1=rand(1); y1=rand(1); r = 10; v1= 2*rand(1); v2= 2*rand(1); syms t eq=(x1+t*v1)^2+(y1+t*v1)^2-r^2; ... 대략 10년 전 | 0 ...
Please change to a working folder that is not in the MATLAB installation area and re-try the previous command. 您当前的工作文件夹是: E:\ MATLAB2018B \ Program Files \ MATLAB \ R2018b \ bin Simulink不允许您修改MATLAB安装区域。 请更改为MATLAB中没有的工作文件夹 安装区域并重新尝试上一个...
I tried it with 5th, 7th and 11th order they all gave me the correct coefficients, but when I changed to even number order (e.g. 8th and 10th), the results changed as well. Here is my code and data for the 10th order system: 테마복사 syms o c1 c2 c3 c4 c5 c6 c7 ...
The Debugging points me to: fork = 1:origVars S{k} = char(vars(k)); end When I change to: fork = 1:origVars S(k) = char(vars(k)); end I get an error message: Unableto perform assignment because the left and right sides have a different ...