化简f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)要过程
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/17 20:26:21
化简f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)要过程
![化简f(x)=(6sin^4x-7sin^2x+2)/(sin^2x-cos^2x)要过程](/uploads/image/z/15440220-36-0.jpg?t=%E5%8C%96%E7%AE%80f%28x%29%3D%286sin%5E4x-7sin%5E2x%2B2%29%2F%28sin%5E2x-cos%5E2x%29%E8%A6%81%E8%BF%87%E7%A8%8B)
原式= (3sin²x-2)(2sin²x-1)/(sin²x-cos²x)
= (3sin²x-2)[2sin²x-(sin²x+cos²x]/(sin²x-cos²x)
= (3sin²x-2)(sin²x-cos²x)/(sin²x-cos²x)
= (3sin²x-2)
= (3sin²x-2)[2sin²x-(sin²x+cos²x]/(sin²x-cos²x)
= (3sin²x-2)(sin²x-cos²x)/(sin²x-cos²x)
= (3sin²x-2)
求导f(x) = cos(3x) * cos(2x) + sin(3x) * sin(2x).
化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x)
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
f(X)=sin^4x-cos^4x+cos^2x 判断奇偶性 要具体过程的.
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
已知函数f(x)=2cos x sin(x+pai/6)-sin^2x+cos^2x.
已知函数f(x)=cos^4 x-2sin x cos x-sin^4 x
sin^2x+cos^2x)(sin^4x-sin^2xcos^2x+cos^4x) =sin^4x-sin^2xcos
f(x)=2SIN^2(x+π\4)-cos(2x+π\6) 化简 谢
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)