求的一阶导数y’.
参考答案:
两边取对数得
两边求导得
解析:
由于函数式为多个函数连乘除的形式,用对数求导法最好,化为和差形式,大大减少了计算量.
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小题1:Since 2010, much new and high technology has been introduced from abroad, _________(result)in great increase in production.
小题2:Listen! The song which __________(sing) is very popular with Chinese students nowadays.
小题3: I’m afraid I’ll have to work extra hours for there’re still many problems remaining _________ (solve).
小题4:I would rather I __________(not adopt)his plan last week, because it was of no practice at all.
小题5:The apples __________(taste)good were soon sold out when they were taken to the market.
麻绳根据组成的股数多少分三股、四股、()等三种。