Question

求下面几个圈出来的题目的过程和答案，谢谢

Answer 1

2./
(2)
f(x) =[e^x -e^(-x)]/2
f(-x) =[e^(-x) -e^x]/2 =-f(x)
f(x) 奇函数
(3)
f(x) =[e^x +e^(-x)]/2
f(-x) =[e^(-x) +e^x]/2 =f(x)
f(x) 偶函数
(4)
f(x)= arctanx
f(0) =0
f(-1)=-π/4
f(x^2-1)
=arctan(x^2-1)
6./
(2)
y=ln[(sinx)^5]
u=sinx
v=u^5
y=lnv
(3)
y=[sin(2x+5)]^3
u=2x+5
v=sinu
y=v^3

追问

能写一些第二提的第二第三小题详细过程么

追答

(2)
f(x) =[e^x -e^(-x)]/2
f(-x)
=[e^(-x) -e^x]/2
=-[e^x -e^(-x)]/2
=-f(x)
f(x) 奇函数
(3)
f(x) =[e^x +e^(-x)]/2
f(-x)
=[e^(-x) +e^x]/2
=[e^x +e^(-x)]/2
=f(x)
f(x) 偶函数