x No Plagiarism!5zMrjzkc7qkbLNcUSRUKposted on PENANA 數學不懂?不會吧?難不成在座的各位都把智商拿去微分了?451Please respect copyright.PENANAQn15vEiWTY啊我忘了各位都聽不懂。8964 copyright protection447PENANAflaJ5vUbWh 維尼216.73.216.178ns216.73.216.178da2