こなみかん @d/dx(e^x)=e^x,d/dx(ln(x))=1/x,x>0の投稿

#なうぷれ https://music.youtube.com/watch?v=a8dgNdJVluc&list=PLc0HAKCHB94jRBVNqKZZT-R2CHUEtUY1u