viewimage.php?id=20bcc42e&no=24b0d769e1d32ca73ded8efa11d02831ee99512b64ee64d67099c224c4024eb71eab2fcb23cf22afb67f1fcf73c40a52d767fabd2417aca2f0bf8ce0e371ca5bde969488474ec3773a80c275e99b8c3078774edefe250bf673e80868afda75f9

t=2일때는 뭐 책에증명되있어서 ㄱㅊ은데
그다음부터 감도안잡히네여...