matlab求积分syms x; a=int(1/(1-x^2)*(log(1+x)-log(1-x)); a

syms x;
a=int(1/(1-x^2)*(log(1+x)-log(1-x))); %你这里少了右半个括号
a
结果应该是
a = (log(x + 1) - log(1 - x))^2/4