1,若y=sin(1+Xˆ2) ,则y'=
求导:x^2*y^2 + x sin(y) = 1
若sin(x+y)=1/2,sin(x-y)=1/3,则tanx/tany等于?
y=sin^2*1/x求y"
高数 求导 1 Y=x+x^x 2 Y=sin(x+y
Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y)
Matlab编程问题 cos(x*y)*cos(x*(1-y))-0.5x*sin(x*y)*sin(x*(1-y))=
求证sin^2x+sin^2y-sin^2x*sin^2y+cos^2x*cos^2y=1
Y=1/X X^2+Y^2=9 Y=|-2x| X=-3|sin y|
sin(x+y)=1,则tan(2x+y)+tany=
已知sinx=13,sin(x+y)=1,则sin(2y+x)= ___ .
y=1-x^2 x>=0 ,y=sin|x|/x x
sin(x+y)-sinx=2cos(x+1/2y)sin(1/2y)的详细证明步骤.