C2=(b^2*(P*a^6 + P*b^6 - P*a^2*b^4 - P*a^4*b^2 - 4*P*a^2*b^4*log(b/a) + 4*P*a^4*b^2*log(b/a)))/(32*D*(a^4 + b^4 - 2*a^2*b^2 + ...
確定! 回上一頁