下面7种基本求导公式要熟稔于心、倒背如流:
①:
(xμ)′=μxμ−1
②:
(ex)′=ex
(ax)′=axlna
③:
(lnx)′=x1
(ln∣x∣)′=x1
④:
(sinx)′=cosx (cosx)′=−sinx
(tanx)′=sec2x (cotx)′=−csc2x
(secx)′=secxtanx (cscx)′=−cscxcotx
⑤:
(arctanx)′=1+x21
(arccotx)′=−1+x21
⑥:
(arcsinx)′=√1−x21
(arccos)′=−√1−x21
⑦:
(ln(x+√x2+a2))′=√x2+a21
常见的是a=1的情况:
(ln(x+√x2+1))′=√x2+11
(ln(x+√x2−a2))′=√x2−a21
常见的是a=1的情况:
(ln(x+√x2−1))′=√x2−11
补充常用的几个求导公式:
(x1)′=−x21
复合函数情况:
(√u)′=2√uu′