matlab计算出错啊.syms x ;A=zeros(3,3)for m=0:2for n=0:2A(m+1,n+1)=int((x^m)*(x^n),x,-1,1)endendA =0 0 00 0 00 0 0Conversion to double from sym is not possible.

matlab中输入syms出错怎么解决啊?>> syms xUndefined function or method 'syms' for input arguments of type 'char'.以上 两个Matlab问题1.2.第二个若用syms 会出错, matlab计算出错啊.syms x ;A=zeros(3,3)for m=0:2for n=0:2A(m+1,n+1)=int((x^m)*(x^n),x,-1,1)endendA =0 0 00 0 00 0 0Conversion to double from sym is not possible. matlab的问题：当我输入>> syms x;>>f=x*x 按回车后就出错,这是怎么回事啊?请大家帮帮错误信息：error_msg : maple: directory does not exist------------------------------------------------------------------------ Segme 为什么MATLAB中符号变量的使用会出错syms x;y=x*sin(x*x);dy=diff(y,x) matlab计算函数值,syms x y; y=2*x;如何求x=2时y的值 C语言可不可以像matlab那样进行带有未知数的公式计算呢?就是 syms x y 诸如此类 matlab 中,syms x 是不是相当于x=sym('x') matlab 又出错 求解释!syms xsolve('-2^(1/2)*x+((1+x)/(1-x))^1.443-((1+x)/(1-x))^0.693)=0') ? Error using ==> solve' -2^(1/2)*x+((1+x)/(1-x))^1.443-((1+x)/(1-x))^0.693)=0 ' is not a valid expression or equation.syms xsolve('-2^(1/2)*x+((1+x)/(1-x matlab syms 运行出错>> syms x a b c f=sym('a*x^2+b*x+c')findsym(f,4)y(1)=limit(f,x,1)y(2)=limit(f,1)y(3)=limit(f,a,2)y(4)=limit(f,b,1)yAttempt to execute SCRIPT syms as a function.Error in ==> jixian at 1syms x a b c 请问是为什么呢? matlab积分出错:Explicit integral could not be found.syms x;int((cos(pi*cos(x))+1)^2/sin(x),0,pi)Warning:Explicit integral could not be found.有什么其他的方法,可以找到这个积分的解? Matlab 出错 matlab出错, matlab运行syms x；s=solve(x^3+cos(x)) 为什么结果总是[ empty sym ]啊, MATLAB 中syms matlab 用plot画曲线命令出错程序如下：syms x>> syms y>> y=1.2-0.8*erf(x/0.76)-0.3*erf((10-x)/0.76)y =6/5-4/5*erf(25/19*x)+3/10*erf(-250/19+25/19*x)>> x=0:0.01:10;>> plot(x,y);Error using ==> plotConversion to double from sym is not possib matlab绘制多条曲线我在前文用syms定义的参数变量,经过一系列运算求得f=1/x^2p1=1/x^3p2=1/x^4怎样将这些函数都绘制在同一图中?如果写成plot(x,f)会出错,因为我x是syms型的,请问如何解决Error using ==> matlab 计算定积分怎么运行很慢,我的程序如下：syms x S2=sqrt(1+(1.767*x^2-3.68*x+2.74