用matlab绘制 y1=x1*log(x)+x2*x^2*log(x)+x3*x^2+x4+p0*x^4/(64*D)
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用matlab绘制 y1=x1*log(x)+x2*x^2*log(x)+x3*x^2+x4+p0*x^4/(64*D) x=[6.5e-3 11e-3];
和y2=x5*log(x)+x6*x^2*log(x)+x7*x^2+x8+p0*x^4*rb/(64*D*(rb-rk))-p0*x^5/(225*D*(rb-rk));X=[11e-3 14e-3];其中h=4e-4;E=2e11;u=0.3;D=E*h^3/(12*(1-u^2));p0=3e6;
y1 y2组成一个方程组,绘制方程组的图像
和y2=x5*log(x)+x6*x^2*log(x)+x7*x^2+x8+p0*x^4*rb/(64*D*(rb-rk))-p0*x^5/(225*D*(rb-rk));X=[11e-3 14e-3];其中h=4e-4;E=2e11;u=0.3;D=E*h^3/(12*(1-u^2));p0=3e6;
y1 y2组成一个方程组,绘制方程组的图像
你给的条件显然不够:
x1, x2, ..., x8是什么?
第二个方程中的rb和rk是什么?
第二个方程后面给的X有什么用?
建议提问的时候认真一点,尽量把问题说清楚,那样既有助于你的问题尽快得到解决,也避免无谓地浪费别人的时间精力.
再问: x1= -0.003187724629194;x2=-50.227734374999997;x3= -1.934852705286614e+002;x4=-0.018636769870490;x5=-0.004905182558882;x6= -97.540624999999963;x7=-3.989743019644625e+002;x8=-0.028872578697937;rb=14e-3;rk=11e-3;h=4e-4;E=2e11;u=0.3;D=E*h^3/(12*(1-u^2));p0=3e6;这些都算常数。解一个方程组里的这两个方程,每个方程后面的是他们未知数X的取值范围,怎样绘制在一个图上,这两个方程在x=11e-3处有交点。谢谢
再答: x1= -0.003187724629194; x2=-50.227734374999997; x3=-1.934852705286614e+002; x4=-0.018636769870490; x5=-0.004905182558882; x6= -97.540624999999963; x7=-3.989743019644625e+002; x8=-0.028872578697937; rb=14e-3; rk=11e-3; h=4e-4; E=2e11; u=0.3; D=E*h^3/(12*(1-u^2)); p0=3e6; X1 = linspace(6.5e-3,11e-3, 50); x = X1; Y1 = x1*log(x) + x2*x.^2.*log(x) + x3*x.^2 + x4 + p0*x.^4/(64*D); X2 = linspace(11e-3,14e-3, 50); x = X2; Y2 = x5*log(x) + x6*x.^2.*log(x) + x7*x.^2 + x8 + p0*x.^4*rb/(64*D*(rb-rk)) - p0*x.^5/(225*D*(rb-rk)); plot(X1, Y1, 'b', X2, Y2, 'r')
x1, x2, ..., x8是什么?
第二个方程中的rb和rk是什么?
第二个方程后面给的X有什么用?
建议提问的时候认真一点,尽量把问题说清楚,那样既有助于你的问题尽快得到解决,也避免无谓地浪费别人的时间精力.
再问: x1= -0.003187724629194;x2=-50.227734374999997;x3= -1.934852705286614e+002;x4=-0.018636769870490;x5=-0.004905182558882;x6= -97.540624999999963;x7=-3.989743019644625e+002;x8=-0.028872578697937;rb=14e-3;rk=11e-3;h=4e-4;E=2e11;u=0.3;D=E*h^3/(12*(1-u^2));p0=3e6;这些都算常数。解一个方程组里的这两个方程,每个方程后面的是他们未知数X的取值范围,怎样绘制在一个图上,这两个方程在x=11e-3处有交点。谢谢
再答: x1= -0.003187724629194; x2=-50.227734374999997; x3=-1.934852705286614e+002; x4=-0.018636769870490; x5=-0.004905182558882; x6= -97.540624999999963; x7=-3.989743019644625e+002; x8=-0.028872578697937; rb=14e-3; rk=11e-3; h=4e-4; E=2e11; u=0.3; D=E*h^3/(12*(1-u^2)); p0=3e6; X1 = linspace(6.5e-3,11e-3, 50); x = X1; Y1 = x1*log(x) + x2*x.^2.*log(x) + x3*x.^2 + x4 + p0*x.^4/(64*D); X2 = linspace(11e-3,14e-3, 50); x = X2; Y2 = x5*log(x) + x6*x.^2.*log(x) + x7*x.^2 + x8 + p0*x.^4*rb/(64*D*(rb-rk)) - p0*x.^5/(225*D*(rb-rk)); plot(X1, Y1, 'b', X2, Y2, 'r')
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