3-sinx
1.函數(shù)y=------------的值域?yàn)?
3+sinx
2.已知函數(shù)f(x)=2sin(wx+z)對(duì)任意x都有f(π/6+x）=f(π/6-x）,則f(π/6)等于
A.2或0 B.-2或2 C.0 D.-2或0
3.函數(shù)f(x)=cos(x+π/4)sin(π/4-x)-1/2是
A.最小正周期為2π的偶函數(shù)
B.最小正周期為π的偶函數(shù)
C.最小正周期為2π的奇函數(shù)
D.最小正周期為π的奇函數(shù)
4.設(shè)x是第二象限角,則點(diǎn)P（sin（cosx）,cos（cosx））在 象限
5.已知a向量,b向量滿足：ⅠaⅠ=3,ⅠbⅠ=2,Ⅰa+bⅠ=4,則Ⅰa-bⅠ=
6.若函數(shù)f(x)=asin2x+btanx+1,且f(-3)=5,則f(π+3)=
4cos四次方x-2cos2-1
7.已知函數(shù)f（x）=--------------------------------
sin(π/4+x)sin(π/4-x)
(1)求f(-(11π)/12)的值
（2）當(dāng)x屬于[0,π/4)時(shí),求g(x)=1/2f(x)+sin2x的最大值和最小值