17(2-3y)-5(12-y)=8(1-7y)求y的值

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 23:32:36
17(2-3y)-5(12-y)=8(1-7y)求y的值
x)34H׸N]S HĶuAg*jyڰ&HT-v64D԰R@۴BԬ,kdkb,bhPiklfz&6yvP'ڀ9D 4Lj.P(m 5c

17(2-3y)-5(12-y)=8(1-7y)求y的值
17(2-3y)-5(12-y)=8(1-7y)求y的值

17(2-3y)-5(12-y)=8(1-7y)求y的值
17(2-3y)-5(12-y)=8(1-7y)
34-51y-60+5y=8-56y
-26-46y=8-56y
10y=34
y=3.4

17(2-3y)-5(12-y)=8(1-7y)
10y+34=0
y=-3.4

17(2-3y)-5(12-y)=8(1-7y)
34-51y-60+5y=8-56y
-51y+5y+56y=8-34+60
10y=34
y=34/10
y=3.4

y=3.4

17(2-3y)-5(12-y)=8(1-7y)求y的值 请解答方程组:(39)2x+y=5 (40)x+y=7 (41)2x+3y=12 (42)2x+y=3ax+3y=7 2x-y=8 3x+4y=17 3x-5y=11(43)3x+y=82 (44)3(x-1)=y+5 45 x/4+y/3=7 (46)x+y/3 +x-y/2=610x-11y=87 5(y-1)=3(x+5) 2/3x+y/2=14 3(x+y-)2(x-y)=28 方程5y(2y-3)=(y+2)(y-2)-1 [T,Y]=ode45(@rigid,[0 1],[rand(15,1)]);plot(T,Y(:,1),'-',T,Y(:,2),'-.',T,Y(:,3),'.',T,Y(:,4),'-',T,Y(:,5),'-.',T,Y(:,6),'.',T,Y(:,7),'-',T,Y(:,8),'-.',T,Y(:,9),'.',T,Y(:,10),'-',T,Y(:,11),'-.',T,Y(:,12),'-.',T,Y(:,13),'.',T,Y(:,14),'-',T,Y(:,15),'.') (5Y+4)/3+(Y-1)/4=2-(5Y-5)/12 Y=? 微分方程y''-3y'+2y=5,y(0)=1,y'(0)=2求解过程 (96/y²16)+(3y-1/4-y)=(2y-1/y+4)-5 4(2y+3)=8(1-y)-5(y-2)解方程 3x+y=2 -y/x+y=123x+y=2 (-y/x)+y=12 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y) 5=7+2x 3y-6=y-2 7y+6=4y-3 9-6x=17+2x 8y-1/2y=3/4-9移项(1)5=7+2x(2)3y-6=y-2(3)7y+6=4y-3 (4)9-6x=17+2x (5)8y-1/2y=3/4-9移项 方程组:x(y+1)+2(y+1)=y(y-1)x-5(y-1) x(4+y)-y(8-x)=-20x(y+1)+2(y+1)=y(y-1)x-5(y-1) x(4+y)-y(8-x)=-20(这是一个方程组.) 解方程组2x-y=1 2y+x=8(代入法) 5x+2y=7 16x+9y=12(加减法) x-2y=3 2x-1/2y=6(用代入法)4x-3y=-1 4x+5y=7 (用加减法) 3x-2y=6 2x+3y=17(用加减法) 用代入法解下列方程组{x-y-6,2x+3y-8 {3(y-2)=x-17,2(x-1)-5y-8 [(x+2y)²-(x+y)(3x-y)-5y²]÷(2x),其中x,y满足x²+4x+y²-y+17/4=0已知、x+y=6且xy=4(1)x²+y² (2)(x-y)² (3)x{四次方}+y{四次方}第一题没错 书上就这样写的!