数学常令不少学生感到困扰，复杂的题目更是令人难以捉摸。有时虽有解题思路，却因概念抽象或能力所限而无法深入，若直接查看答案又往往难以真正掌握方法。如今，随着智能手机的普及，各类学习工具应运而生，极大地方便了数学学习。其中，Math studio是 ...

Ryan is a tech/science writer, skeptic, lover of all things electronic, and Android fan. In his spare time he reads golden-age sci-fi and sleeps, but rarely at the same time. His wife tolerates him as ...