化简sin(2x)*cos(x)-cos(2x)*sin(x)

化简(sin^2x-cos^4x+cos^2x-sin^4x)/(sin^2x-cos^6x+cos^2x-sin^6x)化简(sin^2x-cos^4x+cos^2x-sin^4x)/(sin^2x-cos^6x+cos^2x-sin^6

化简sin(x)cos(x)cos(2x)化简sin(x)cos(x)cos(2x)化简sin(x)cos(x)cos(2x)sin(x)cos(x)cos(2x)=1/2sin(2x)cos(2x)=1/4sin(4x)1/4sin4x

化简sin(x)cos(x)cos(2x)化简sin(x)cos(x)cos(2x)化简sin(x)cos(x)cos(2x)1/2sin2x*cos2x=1/4sin4x

sinxcosxcos2x化简sinxcosxcos2x化简sinxcosxcos2x化简是乘法吗?若是(sinx)(cosx)(cos2x)=(0.5sin2x)(cos2x)=0.5(sin2x)(cos2x)=0.25sin4x

化简(sinx+cosx-1)(sinx-cosx+1)/sin2x化简(sinx+cosx-1)(sinx-cosx+1)/sin2x化简(sinx+cosx-1)(sinx-cosx+1)/sin2xsinx=2sin(x/2)cos(

cosx/sinx+sinx/(1+cosx)化简.cosx/sinx+sinx/(1+cosx)化简.cosx/sinx+sinx/(1+cosx)化简.通分=[cosx(1+cosx)+sin²x]/sinx(1+cosx)=

化简sin^4x+cos^2x化简sin^4x+cos^2x化简sin^4x+cos^2x(7+cos4x)/8主要利用了降幂公式sin^2x=(1-cos2x)/2cos^2x=(1+cos2x)/2你试试看

化简cos^2(x)*sin^2(x)-sin^2(x)化简cos^2(x)*sin^2(x)-sin^2(x)化简cos^2(x)*sin^2(x)-sin^2(x)=sin^2(x)*[cos^2(x)-1]=-sin^4(x)

化简cos^(2)(x)*sin^(2)(x)-sin^(2)(x)化简cos^(2)(x)*sin^(2)(x)-sin^(2)(x)化简cos^(2)(x)*sin^(2)(x)-sin^(2)(x)

化简sin^4x-sin^2x+cos^2x化简sin^4x-sin^2x+cos^2x化简sin^4x-sin^2x+cos^2xsin^4x-sin^2x+cos^2x=sin^2x(sin^2x-1)+cos^2x=-sin^2xco

化简:sin^4x-sin^2x+cos^2x化简:sin^4x-sin^2x+cos^2x化简:sin^4x-sin^2x+cos^2xsin^4x-sin^2x+cos^2x=sin^2x(sin^2x-1)+cos^2x=-sin^2

化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x))化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x))化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x))

化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)y=sin²x

化简1/2cosx-根号3/2sinx根3sinx+cosx化简1/2cosx-根号3/2sinx根3sinx+cosx化简1/2cosx-根号3/2sinx根3sinx+cosx3/2cosx-3/2(sinx)^2

化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x化简[1-(sin^4x-sin^2cos^

2cosx(sinx-cosx)+12cosx(sinx-cosx)+12cosx(sinx-cosx)+12cosx(sinx-cosx)+1=2sinxcosx-2cosx^2+1=sin2x+1-2cosx^2=sin2x-cos2x

y=2cosx(sinx+cosx)y=2cosx(sinx+cosx)y=2cosx(sinx+cosx)先采纳呀

化简2sin^2(x)sin^2(φ)+2cos^2(x)cos^2(φ)-cos2(x)cos^2(φ)化简2sin^2(x)sin^2(φ)+2cos^2(x)cos^2(φ)-cos2(x)cos^2(φ)化简2sin^2(x)sin

已知函数y=(sinx+cosx)(sinx+cosx)+2cosx*cosx,求它的递减区间语气亲和、态度友好已知函数y=(sinx+cosx)(sinx+cosx)+2cosx*cosx,求它的递减区间语气亲和、态度友好已知函数y=(s

已知向量a=(sinx,cosx+sinx),b=(2cosx,cosx-sinx),x∈R,设函数f(x)=ab（1）求函数f（x）的最大值及相应的自变量X的取值集合.（2）当x属于（0,π/8）,且f（x）=5分之4根号2时,求f（x+