x/0.5+(0.18-0.03x)/0.02=1

解方程,：x/0.5+(0.18-0.03x)/0.02=1 x/0.5+(0.18-0.03x)/0.02=1 0.4x+0.9/0.5-0.03-0.02x/0.03-x-5/2=0 4.75x-0.5x^2-0.5=0,解X mathematica软件,已知y[x],Y=f1(x),X(x)=f2(x),如何plot Y[X]?y[x_] := x + 9.81/2*x*xk=1X[x] = x - k*y'[x]/(1 + (y'[x])^2)^0.5Y[x] = y[x] + k/(1 + (y'[x])^2)^0.5Plot[{y[x],Y[X],},{x,0,2}] 解方程:3/x+6/x-1=5/x^2-x5/x=7/x-2(x-1/x+1)-(4/x^2-1)=1填空:当x=______时,分时3/x^2-1有意义分式0.01x-0.5y/2x+0.03y化为整系数为_________.分式x^2-4/x+4的值为0,则x的值为________化简(x/x-2-x/x+2)除以4x/2-x的结果是______ 0.1x²+X+0.5=0 1、lim(x->无穷大) e^x arctanx2、lim(x->0)sinx√1+sin(1/x)3、lim(x->无穷大)【（√x^2+x+1）-【(√x^2-x+1)】4、lim(x->无穷大)((x+{x+(x)^0.5]^0.5}^0.5)/(2x+1)^0.55、lim(x->0)(sin3x+x^2sin1/x)/((1+cosx)x)6、lim(n->无穷大)(2^n)(si X+1>0 X f(x)=｛x x≥0-x X x不等于0,计算x/|x|-x/|x| lim(x趋向0）(e^x-x^-x)/x 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X (0.4x+0.9)/0.5-(0.03+0.02x)/0.03=(x-5)/2 x等于多少? 0.02x-0.01/0.03-0.4x+0.2/0.5-3X+2/4=-3求x 若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x（2000次幂） (x^2-2)/(x+3)-(3x+9)/(0.5x^2-1)+1=0 f(x)=2/x+9/(1-2x)(x属于（0,0.5）)的最小值