[[資料室]] *関数電卓で計算 [#je72f11d] **デシベル計算 [#v81e19b3] ***自然体数の3dBを求める [#d1e2c17a] &mimetex(3/10=);~ &mimetex(\fbox{shift}\fbox{\log}\fbox{ans}=); &mimetex(\mathscr{4}); &mimetex(\cms{\val{4});