已知函数f(x)=(1+cotx)sin^2(x)+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/07/15 07:03:41
已知函数f(x)=(1+cotx)sin^2(x)+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)=3/5求M的值
已知函数f(x)=(1+cotx)sin^2x+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)=3/5求M的值
已知函数f(x)=(1+cotx)sin^2x+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)=3/5求M的值
![已知函数f(x)=(1+cotx)sin^2(x)+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)](/uploads/image/z/3390537-57-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3D%EF%BC%881%2Bcotx%EF%BC%89sin%5E2%28x%29%2BMsin%28x%2B%E2%88%8F%EF%BC%8F4%29sin%28x-%E2%88%8F%EF%BC%8F4%29%2C%E8%8B%A5tana%3D2%2CF%EF%BC%88a%EF%BC%89)
f(x)=(1+cotx)sin^2x+Msin(x+∏/4)sin(x-∏/4)
=(sinx+cosx)sinx + (√2/2)M(sinx+cosx)(sinx-cosx)
tana = sina/cosa = 2; sina = 2cosa
f(a)= 3cosa 2cosa + (√2/2)M(3cosa)(cosa)
=[6+(3√2/2)M]cos^2(a) = 3/5
1/cos^2(a) = [5(4+√2M)]/2
1+(tanα)^2=(secα)^2
1 + 4 = [5(4+√2M)]/2
M = -√2
=(sinx+cosx)sinx + (√2/2)M(sinx+cosx)(sinx-cosx)
tana = sina/cosa = 2; sina = 2cosa
f(a)= 3cosa 2cosa + (√2/2)M(3cosa)(cosa)
=[6+(3√2/2)M]cos^2(a) = 3/5
1/cos^2(a) = [5(4+√2M)]/2
1+(tanα)^2=(secα)^2
1 + 4 = [5(4+√2M)]/2
M = -√2
已知函数f(x)=(1+cotx)sin^2(x)+Msin(x+∏/4)sin(x-∏/4),若tana=2,F(a)
已知函数f(x)=(1+cotx)sin^2(x)-2sin(x+∏/4)sin(x-∏/4),若tana=2,求f(a
已知函数f(x)=(1+cotx)sin^2x+msin(x+4π)sin(x-4π)
已知函数f(x)=(1+cotx)sin²x+msin(x+π/4)× sin(x-π/4)
已知函数f(X)=(1+1/tanx)sin^2x+msin(x+π/4)sin(x-π/4) 当tana=2时,f(a
已知函数f(x)=(1+cotx)sin^2(x)-2sin(x+π/4)sin(x-π/4)
三角函数恒等变换已知函数f(x)=(1+1/tanx)*sinx^2+msin(x+π/4)sin(x-π/4)(1)当
已知函数f(1+cotx)sinx^2-2sin(x+π/4)sin(x-π/4)
已知函数f(x)=(1+cotx)sin²x-2sin
已知函数f(x)=(1+1/tanx)sin^2x+msin(x+π/4)sin(x-π4),当m=0时,
已知函数f(x)=(1+1/tanx)sin^2-2sin(x+π/4)sin(x-π/4).求tana=2时,f(a)
函数f(x)=(1+1/tanx)sin^2x-2sin(x+π/4)sin(x-π/4).若tana=2,求f(a).