作业帮sin(x+y)sin(x-y)=m,则(cosx)^2-(cosy)^2的值为求具体过程,谢谢!
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/18 22:39:37
x)+ӨЮӺ:O;fj$Wh@Y-O<ٱƦ۟b:/6,"E"}ke~
m0 ,WhL*k!Du:@AU 4 JM]H%LnhC];jmh mD,nZ\V7Cy,Xn~qAb (
sin(x+y)sin(x-y)=m,则(cosx)^2-(cosy)^2的值为求具体过程,谢谢!
sin(x+y)sin(x-y)=m,则(cosx)^2-(cosy)^2的值为
求具体过程,谢谢!
sin(x+y)sin(x-y)=m,则(cosx)^2-(cosy)^2的值为求具体过程,谢谢!
sin(x+y)*sin(x-y)=m
(sinx*cosy+siny*cosx)*(sinx*cosy-siny*cosx)=m
(sinx*cosy)^2-(siny*cosx)^2=m
sin^2(x)*cos^2(y)-sin^2(y)*cos^2(x)=m
sin^2(x)*cos^2(y)-[1-cos^2(y)]*cos^2(x)=m
sin^2(x)*cos^2(y)-cos^2(x)+cos^2(y)*cos^2(x)=m
[sin^2(x)+cos^2(x)]*cos^2(y)-cos^2(x)=m
cos^2(y)-cos^2(x)=m
则(cosx)^2-(cosy)^2=-[cos^2(y)-cos^2(x)]
=-m
设sin(x+y)sin(x-y)=m,则cos^2x-cos^2y的值
求证sin²x-sin²y=sin(x+y)sin(x-y)
已知(sinx)2-(siny)2=m求sin(x y)sin(x-y)求sin(x+y)sin(x-y)
sin（x+y）*sin（y-x）=m,cosx的平方-cosy的平方?
Mathematica y''+ sin(x) y=x
证明sin(x+y)sin(x-y)=sinx-siny
sin(x+y)sin(x-y)=m,则(cosx)^2-(cosy)^2的值为求具体过程,谢谢!
sin(x+y)sin(x-y)=m,则cosx的平方-cosyd 平方的值为?
y=sin根号x
y=sinx+sin|x|
已知sin(x+y)/cos(x-y)=m/n,则tanx/tany=?
sin(x.y)中,
sin(x)^y求导
一道三角恒等式证明题请证明sin(x+y)sin(x-y)=sin^2(x)-sin^2(y)
y=[sin^2(x)]*[sin^2(x)]求导
已知sinx=1/3,sin(x+y)=1,则sin（2y+x)=
已知sin(x+y)=1/3,sin(x-y)=1/5,则tanx/tany
y=(sin x + COS x)^2