1.2/0.6+0.4-0.2=1.5 在上面的算式中添上括号,是它的运算结果等于3/2

0.4(x-0.6)-1.5=1.2x-3.34 1.2/0.6+0.4-0.2=1.5 在上面的算式中添上括号,是它的运算结果等于3/2 简算:0.1×0.2×0.4×+0.2×0.4×0.8+0.3×0.6×1.2分之0.1×0.3×0.9×+0.2×0.6×1.8+0.3×0.9×2.7= （0.1×0.2×0.4＋0.2×0.4×0.8＋0.3×0.6×1.2）分之（0.1×0.3×0.9＋0.2×0.6×0.8＋0.3×0.9×2.7）= 0.4（x-0.6)-1.5=1.2x-3.34的方程怎么解 matlab利用公式绘图画出C=4,2,1.5,1.2,1.15,1.10,1.05,1.026,0.95,0,9,0.8,0.6,0.4,0.2,0.1时的等值线图（contour函数）,画出来的图与下图类似：[c,h]=contour(x,y,C[0.01,0.2,0.4,0.6,0.8,0.9,0.95,0.974,1.026,1.05,1.1,1.15,1.2,1.2105 0.4x-0.6=0.2x-1.8 0.4x-0.6=0.2x-1.8 1.8-0.4x=0.2x-0.6 (0.1*0.3*0.9+0.2*0.6*1.8+0.3*0.9*2.9)除以（0.1*0.2*0.4+0.2*0.4*0.8+0.3*0.6*1.2） (0.1*0.3*0.9+0.2*0.6*1.8+0.3*0.9*2.9)除以（0.1*0.2*0.4+0.2*0.4*0.8+0.3*0.6*1.2） 0.2x-1.2=0.6+x (+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=?(+0.2)+(-0.2)+(+0.7)+(-0.3)+(-0.4)+(+0.6)+0+(-0.1)+(-0.6)+(+0.5)+(-0.2)+(-0.5)=? 0.4(x-0.2)+1.5=0.7x-0.38 （0.6x+420）÷（x+20）=3 (0.1x+0.4)/0.2-(0.2x-0.6)/0.3=1 0.2x-1.5=1-0.2分之x+0.4 matlab方向图怎么画x=[2.4 2.4 2.4 2.4 2.4 5 5 5 5 5 7.2 7.2 7.2 7.2 7.2];y=[0.3 0.9 1.5 2.1 2.7 0.3 0.9 1.5 2.1 2.7 0.3 0.9 1.5 2.1 2.7];plot(x,y,'+')Z=[0.6 0.6 0.9 1.1 1.1 0.4 0.4 0.5 0.6 0.6 0.4 0.2 0.2 0.2 0.2];t=Z;xi=1.6:0.01:8;yi=0:0.01:3.2 a=2^0.2,b=0.4^0.2,c=0.4^0.6 比较大小