sinxcosx=1/4,且π/4
已知sinxcosx=60/169,且π/4
已知函数f(x)=2cos2(平方)x+2根号3sinxcosx+a且f(π/6)=4
求不定积分 sinxcosx/1+sinx^4 dx
求sinxcosx/(1+(sinx)^4)的不定积分
∫sinxcosx/(1+sin^4x)dx
已知sinx大于0,cosx大于0,且sinxcosx大于1/4,X的取值范围是______
求函数f(x)=sin^4x+cos^4x+sin^2xcos^2x/2-2sinxcosx-1/2sinxcosx+1
sinx+cosx=1/5,x属于(π/2,3π/4),求sinxcosx,sin2x,cos2x,sinx,cosx
求函数f(x)=(sinx+cos^4x+sin^2xcos^2x)/2-2sinxcosx-1/2sinxcosx+1
已知tanx=2,求下列各式的值,(1) sinxcosx(2) 2sin^2x-3sinxcosx-4cos^2x
0<X<π/4,求函数f(x)=(cos2x+1)/(sinxcosx-sin^2x)的最小值!
求定积分∫1/sinxcosx dx(上限π/3,下限π/4),也如图,