推 harry901:Integration by Residue Theorem 218.169.18.157 01/14
推 minyuan:Let x = tanθ, then... 61.31.179.72 01/14
推 KueiYuan:留數+1 61.216.32.31 01/14
推 minyuan:But he titled "Calculus"..= =a 61.31.179.72 01/15