设函数f(x)=3sin(wx+π/6),w>0 x∈(-∞,+∞),且以π/4为最小正周期 (
设函数f(x)=3sin(wx+π/6),w>0x∈(-∞,+∞),且以π/4为最小正周期 (1)求f(0)(2)求f(x)的解析式(3)已知f(a/8+π/24)=9/5,求cos平方a的值
人气:247 ℃ 时间:2019-08-18 16:47:51
解答
f(0)=3sin(w0+π/6),=3sin(π/6)=3/2 ,π/2为最小正周期 ∴根据公式T=2π/w∴W=4∴f(x)=3sin(4x+π/6)第三问f(a/4+π/12)=9/5∴f(a/4+π/12)=3sin(4(a/4+π/12)+π/6)=3sin(a+π/3+π/6)=3cos(a)=9/5所...
推荐
- 设函数f(x)=3sin(wx+π/6),w>0,x属于R,且以π/2为最小正周期 (1)求f(0)? (2)求f(x)的解析式?
- 设函数f(x)=3sin(wx+π/6),w>0,x属于(负无穷大,正无穷大),且以π/2为最小正周期
- 函数f(x)=3sin(wx+π/4)(w>0,x∈R),的最小周期为2π/3
- 已知函数f(x)=√3sin(wx)-2sin^2(wx/2)+m(w>0)的最小正周期为3π
- 设函数f(x)=3sin(wx+TT/6),w>0,x∈(负无穷,正无穷),且以TT/2为最小正周期,求f(0)
- C12和C13组成的金刚石是
- It's going to be sunny.
- i hear tom lives here ,but i'm not sure (which room he lives in)
猜你喜欢