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}]
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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}]
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*x
k=1
X[x] = x - k*y'[x]/(1 + (y'[x])^2)^0.5
Y[x] = y[x] + k/(1 + (y'[x])^2)^0.5
Plot[{y[x],Y[X],},{x,0,2}]
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}]
参数方程曲线绘制用ParametricPlot函数.
y[x_] := x + 9.81/2*x*x;
k = 1;
X[x_] := x - k*y'[x]/(1 + (y'[x])^2)^0.5;
Y[x_] := y[x] + k/(1 + (y'[x])^2)^0.5;
ParametricPlot[{X[x], Y[x]}, {x, 0, 2}, AspectRatio->1]
你运行下看是不是你想要的?