大家好！matlab中符号矩阵如何求逆？谢谢！

>> syms a b c d >> A=[a,b;c,d]A = [ a, b][ c, d]>> inv(A)ans = [ d/(a*d - b*c), -b/(a*d - b*c)][ -c/(a*d - b*c), a/(a*d - b*c)]