sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分
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sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分sin^2xcos^2x/(cos^3x+sin^3
sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分
sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分
sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分
积分结果:
(3 Cos[x] + Cos[3 x] -
8 Sin[x]^3)/(18 (Cos[x] + Sin[x]) (-2 + Sin[2 x])),常数项自己加就可以了
sin^2xcos^2x/(cos^3x+sin^3x)^2dx的不定积分
(1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x
化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x
1-(sin^6x+cos^6x)=3sin^2xcos^2x 如何证明?
1-2sin xcos x/cos的平方x
sin^8X+cos^8X+4sin^2Xcos^2x-2sin^4xcos^4X(化简)
sin^2xcos^3x的不定积分,
sin^4x-sin^2xcos^2x+cos^4x =(sin^2x+cos^2x)^2-3sin^2xcos^2x 那么这个依据呢?老师
化简:cos^2x(2cos^2x+3)-sin^2x(2cos^2x+3)-4sin^2xcos^2x+3
化简:cos^4x+sin^2xcos^2x+cos^2x
已知tanx=-3/4,求2sin^2 x+3sin xcos x-cos^2 x
求证sin^4x+cos^4x=1-2sin^2xcos^2x
sin^4x+cos^4x=1-2sin^2Xcos^2X谢谢额
化简sin^4x+sin^2xcos^2x+cos^2x=?(请写过程)
化简cos^4x+sin^2xcos^2x+sin^2x
求证 cos*xcos*y + sin*xsin*y + sin*xcos*y + xin*ycos*x = 1cos*xcos*y + sin*xsin*y + sin*xcos*y + sin*ycos*x = 1注意:[*] 的意思是 [ ^2 ]写下左右过程..
cos xsin b-sin xcos b和sin xcos x-
sin^4+sin^2xcos^2x+cos^2x 证明 =1