matlab公式 t=[1/(a*b)]*[m-n-(2*d*c/b)]*log[(m*b-2*d*c)/(n*b-2*

matlab公式 t=[1/(a*b)]*[m-n-(2*d*c/b)]*log[(m*b-2*d*c)/(n*b-2*d*c)];
哪位仁兄帮看看怎么回事,matlab里面输入上面公式就出来Error:Unbalanced or misused parentheses or brackets.