f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/13 15:37:37
f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)
化简:f(x)=(6sin⁴x-7sin²x+2)/(sin²x-cos²x)
f(x)=(2sin²x-1)(3sin²x-2)/(sin²x-cos²x)=[sin²x-(1-sin²x)](3sin²x-2)/(sin²x-cos²x)
=(sin²x-cos²x)(3sin²x-2)/(sin²x-cos²x)=3sin²x-2
(-1 - 3 Cos2x)/2
f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)
=(2sin^2x-1)(3sin^2-2)/[sin^2x-(1-sin^2x)]
=3sin^2x-2
=3[(2sin^2x-1)+1]/2
=3(-cos2x+1)/2
=3(1-cos2x)/2
f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)
傅里叶级数作图f(x)=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si
化简f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)要过程
f(x)=(1+cotx)sin^2x-2sin(x+π/4)sin(x-π/4)还有一题,
已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)sin(x-π/4)
求导f(x) = 4x^3 + sin(x^2)
函数f(x)=2sin(x+π/4)sin(x-π/4)+sin2x的值域
求f【x】=2sin[x+π/4]sin[x-π/4]+sin2x的最大值
f(x)=sin(2x+π/6)+2sin(x-π/4)sin(x+π/4) 怎么化简为形函数
证明一个sin&cos的等式证明 1+sin^2(x)+sin^4(x)+sin^6(x)=[1-sin^8(x)]/[cos^2(x)]
已知F(X)=根号3COS^2 X+SIN XCOS X-2SIN X*SIN(X-π/6),求F(X)的最大值
f(x)=sin(2x+π/6)怎么求导
证明∫( 0,π/2 ) (f sin x/(f sin x+f cos x) dx=π /4
f(sin^2x)=x/sinx 求f(x)
f(x)=sin^2-sin[2x-(π/6)]的值域过程
f(x)=sin(x+派/6)+2sin 求导
函数f(x)=1-2sin²(x+pai/4),则f(pai/6)=?
已知f(x)=sin