第一种： r=double(S)converts the symbolic object S to a numeric object r. 例子如下： double(sym('(1+sqrt(5))/2')))1.6180 1.6180 第二种： R=vpa(A) 这...这眼根据你的实际情况，给你几种解决建议。第一种： r=double(S)converts the symbolic object S to a numeric ob...
Convert numeric values to symbolic numbers or expressions. Usesymon subexpressions instead of the entire expression for better accuracy. Usingsymon entire expressions is inaccurate because MATLAB® first converts the expression to a floating-point number, which loses accuracy.symcannot always recover thi...
Convert the symbolic logical constant symtrue to a logical value. Get T1 = logical(symtrue) T1 = logical 1 Convert the symbolic logical constant symtrue to numeric values in double precision and variable precision. Get T2 = double(symtrue) T2 = 1 Get T3 = vpa(symtrue) T3 = 1.0...
第一种：r = double(S) converts the symbolic object S to a numeric object r.例子如下： double(sym('(1+sqrt(5))/2')))1.6180 1.6180第二种：R = vpa(A)这适用于用solve等解方程时的结果。构造一个sym型变量x：>> x = sym('10')x =10查看x的类型：>> class(x)ans =sym...
Errorin sym.useSymForNumeric (line 172) oldDigits = digits(16); Errorin hypergeom (line 41) h = sym.useSymForNumeric(@hypergeom,n,d,z); The code runs without a problem on my desktop PC. I tried to implement the hypergeom function myself but ...
在MATLAB中,从sym类型转换为double类型时遇到“unable to convert expression containing”错误通常是因为sym变量中包含未赋值的符号变量。为了解决这个问题,你可以按照以下步骤操作: 检查sym对象的来源和类型: 确认你的sym变量是否包含未赋值的符号变量。你可以使用syms函数声明符号变量,并确保在使用double函数转换之前,所...
第一种: r = double(S) converts the symbolic object S to a numeric object r. 例子如下: double(sym('(1+sqrt(5... Matlab怎样将sym类型的数据转换成double型 可以直接使用double函数: 例子如下: symN = sym([pi 1/3]); %生成一个符号矩阵 doubleN = double(symN) %将符号矩阵转换为double...
For details, see Numeric to Symbolic Conversion. For full workflows, see Find Almost Integers with High-Precision Arithmetic and Prime Factorizations. Convert Hexadecimal and Binary Values to Symbolic Decimal Numbers Starting in R2019b, you can represent hexadecimal and binary values using character vec...
When you replace one or more elements of a numeric vector or matrix with a symbolic number, MATLAB converts that number to a double-precision number. A = eye(3); A(1,1) = sym(pi) A = 3.1416 0 0 0 1.0000 0 0 0 1.0000 You cannot replace elements of a numeric vector or matrix ...
Polynomial coefficients, returned as a numeric row vector.Tips To extract symbolic coefficients of a polynomial, use coeffs. This function returns a symbolic vector of coefficients and omits all zeros. For example, syms a b x; c = coeffs(a*x^3 - 5*b,x) returns c = [ -5*b, a]. ...