(0.2y-0.5/0.5)-(0.01y+0.01/0.02)=1-(1-7y/10)解方程,括号里为分数

··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y ·0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y (0.2y-0.5/0.5)-(0.01y+0.01/0.02)=1-(1-7y/10)解方程,括号里为分数 (y-0.3)/0.2=(0.7y+0.5)/0.5-1.5 0.4y+0.9/0.5-0.3+0.2y/0.3=1 0.4y+0.9/0.5-0.3-0.2y/0.03=1 计算 (y-0.3)/2=(0.7y+0.5)/0.5-1.5应该是(y-0.3)/0.2=(0.7y+0.5)/0.5-1.5 0.4y+0.9/0.5 - 0.3-0.2y/0.3=1(0.4y+0.9)/0.5 - (0.3-0.2y)/0.3=1 0.4y+09/0.5-y-5/2=0.3+0.2y/0.3(解方程) 解方程：y-0.2分之y-1=2-0.5分之y+2 4y-1.5/0.5-5y-0.8/0.2=1.2-y/0.1 4y-1.5/0.5-5y-0.8/0.2=1.2-y/0.1 matlab画图问题（关于微分方程）function ydoc=myfun (t,y)k1=1;k2=1;k3=0.5;k4=1.5;k5=5;l1=0.01;l2=0.6;l3=0.2;a1=0.75;a2=0.75;vd=-k1*tanh(l1*y(2));wd=-k2*tanh(l2*y(3))+k3*tanh(l3*y(1))*sin(t);ydoc=[(y(5)+wd)*y(2);-(y(5)+wd)*y(1)+y(4)+vd;y(5)+ (2/5y-0.5x)(0.5y+2/5y) 10y²－0.5y² 10y²-0.5y²= 10y平方加0.5y平方 90+0.5y+30=6y