sec是sin导数吗

问题描述

精选答案

是secx：sec(x)=(1/cos(x))

=sin(x)/cos^2(x)

=sin(x)/cos(x) * 1/cos(x)

=tan(x) * sec(x) 扩展资料

常见的导数：c'=0(c为常数）

(x^a)'=ax^(a-1),a为常数且a≠0

(a^x)'=a^xlna

(e^x)'=e^x

(logax)'=1/(xlna),a>0且 a≠1

(lnx)'=1/x

(sinx)'=cosx

(cosx)'=-sinx

(tanx)'=(secx)^2

(secx)'=secxtanx

(cotx)'=-(cscx)^2

(cscx)'=-csxcotx

(arcsinx)'=1/√(1-x^2)

(arccosx)'=-1/√(1-x^2)

(arctanx)'=1/(1+x^2)

(arccotx)'=-1/(1+x^2)

(shx)'=chx

(chx)'=shx

（uv)'=uv'+u'v

(u+v)'=u'+v'

(u/)'=(u'v-uv')/^2