sinx值域为:[-1/2,(根号2)/2]
(sinx)^2的值域为:[1/4,1/2]
1-(sinx)^2的值域为:[1/2,3/4]
y=log4(1+sinx)+log4(1-sinX)
=log4(1-(sinx)^2)
其值域为:[log4(1/2),log4(3.4)]
sinx值域为:[-1/2,(根号2)/2]
(sinx)^2的值域为:[1/4,1/2]
1-(sinx)^2的值域为:[1/2,3/4]
y=log4(1+sinx)+log4(1-sinX)
=log4(1-(sinx)^2)
其值域为:[log4(1/2),log4(3.4)]