75970 すうがく数学。ぎょうれつしき行列式のところがしゅくだい宿題になってるんだけど・・・どうもぼく僕にはついていけなくて・・・。 Maths. Homework's about derivatives, but I really can't seem to cope with it. — Tatoeba Discussions Log in to talk about this sentence.