2y-1/2=1/2 y-( ),y=- 5/3
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 15:32:36
2y-1/2=1/2y-(),y=-5/32y-1/2=1/2y-(),y=-5/32y-1/2=1/2y-(),y=-5/33
2y-1/2=1/2 y-( ),y=- 5/3
2y-1/2=1/2 y-( ),y=- 5/3
2y-1/2=1/2 y-( ),y=- 5/3
3
2y-1/2=1/2 y-( ),y=- 5/3
已知x-y=1,y≠0,求{(x+2y)²+(2x+y)(x+4y)-3(x+y)(x-y)}÷y的值.
导数题.y'=2y(y+5) f(t)=y 当t=2 y=3 求 当t=1 y=?更正:y'=-2y(y+5)
y''+y'-2y=0的通解
2y²-4y+1=0
2/5y-1/6y=56 求y
Y-1/2cosY=x 确定隐函数Y=f(X)求Y’
(3y-1)(2y一3)十(6y一5)(y一4)
已知x+y=-2,试计算1/2(x+y)+4(x-y)-3(x-y)-3/2(x+y)-x+y的值
64× x的6次方×y的12次方=( )2次方=-( )3次方就是:64×x×x×x×x×x×x×y×y×y×y×y×y×y×y×y×y×y×y=( )2次方=-( )3次方
把(x+y),(x-y)个作为一个整体合并同类项1,7(x+y)-2(x+y)-4(x+y)+2(x+y)2,(x-y)²+2(x-y)-(x-y)-2(x-y)²
用因式分解法解方程:(y-1)²+2y(1-y)=0
½×(y-1)+⅓×(y-2)+¼(y-3)+3=0得数
x-y+2的绝对值与(x+y-1)的平方互为相反数,则x=?y=?
求这道计算题哪里出错.4x=-6y,等式两边都减去2x-3y,得4x-(2x-3y)=-6y-(2x-3y),所以 2x+3y=-3y-2x,两边都处以2x+3y,得(2x+3y )除以2x+3y=(-3y-2x )除以2x+3y,整理后得1=-1
设集合A={(x.y)|2x+y=1},B={(x.y)|x-2y=2},求A∩B
不等式,2y(y-1)大于等于0
xy''+x(y')∧2-y'=0,y(2)=2,y'(2)=1,求微分方程