在MATLAB中由三个未知量组成的一个隐函数(因为带有自然常数e)其中两个有范围，怎么在matlab中画三维图形 matlab 环境下，两个方程中有三个未知数 h，t，a，如...
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\u5bf9\u65b9\u7a0b\u53d6\u5bf9\u6570 \u53ef\u5f97
ln(k)=ln(A)-EA/R*(1/T);
\u7528k\u7684\u5bf9\u6570\u7ed3\u679c\u4f5cy,T\u7684\u5012\u65701/T\u4f5cx,\u8fdb\u884c\u7ebf\u6027\u62df\u5408
\u7684\u5230\u7684
\u659c\u7387\u662f-EA/R ,\u622a\u8ddd\u662fln(A) \u7531\u6b64\u53ef\u4ee5\u6c42\u51faA\u548cEA
T=[700 730 760 790 810 840 910 1000];
k=[0.011 0.035 0.105 0.343 0.789 2.17 20 145];
R=8.314;
p=polyfit(1./T,log(k),1);
A=exp(p(2));
EA=-p(1)*R;
TT=700:1000;
kk=A*exp(-EA./(R*TT));
plot(T,k,'o');hold on;%\u6570\u636e
plot(TT,kk,'k');hold off;%\u62df\u5408
axis([690 1010 -10 160]);
title(['A=' num2str(A,'%e') ', EA=' num2str(EA,'%e')]);
legend('\u6570\u636e\u70b9','\u62df\u5408\u66f2\u7ebf','Location','North');
\u8fd9\u5c31\u662f\u89e3\u65b9\u7a0b\u554a\uff0c\u7b26\u53f7\u65b9\u7a0b
syms x1 x2 u1 u2f1=0.01*u1*(1-x1)-7.2*1e4*x1*exp(-1e4/x2);
f2=0.01*u1*(350-x2)+1.44*1e13*x1+0.01*u2*(1-exp(-700/u2))*(350-x2);
[x1;x2]=solve([f1;f2],u1,u2);
绛旓細[x1;x2]=solve([f1;f2],u1,u2);
绛旓細鍥炵瓟锛氳繖鏄秴瀹氶潪绾挎ф柟绋嬬粍,鍙互鐢ㄦ渶灏忎簩涔樻硶瑙,浠ヤ笅鏄弬鑰: 涓诲嚱鏁: clc;clear; x0=[3,2,1]; [x,resnorm,restdual,exitflag]=lsqnonlin(@fun,x0); 瀛愬嚱鏁: function f=fun(x) f(1)=-2.2*x(1)+0.25*x(2)-2*x(3); f(2)=4*x(1)-7.2*x(2)+3*x(3); f(3)=-...
绛旓細2涓柟绋3涓湭鐭ラ噺,matlab鐢诲叾涓袱涓彉閲忕殑瀵瑰簲鍏崇郴 20 鏂圭▼1:10^5=sqrt(((10^3-20*w*w)^2+10^4*w*w)*(k*k+b*b*w*w));鏂圭▼2:-pi=-atan(100*w/(10^3-20*w*w))-atan(b*w/k);姹傜敾鍑篵涓巏鐨勫搴斿浘... 鏂圭▼1:10^5=sqrt(((10^3-20*w*w)^2+10^4*w*w)*(k*k+b*b*w*...
绛旓細matlab閲workspace鍙互鍌ㄥ瓨鏈煡閲鍚 1. 淇濆瓨鏁翠釜宸ヤ綔鍖 閫夋嫨File鑿滃崟涓殑Save Workspace As鈥﹀懡浠わ紝鎴栬呭崟鍑诲伐浣滃尯娴忚鍣ㄥ伐鍏锋爮涓殑Save锛屽彲浠ュ皢宸ヤ綔鍖轰腑鐨勫彉閲忎繚瀛樹负MAT鏂囦欢銆2. 淇濆瓨宸ヤ綔鍖轰腑鐨勫彉閲 鍦ㄥ伐浣滃尯娴忚鍣ㄤ腑锛屽彸鍑婚渶瑕佷繚瀛樼殑鍙橀噺鍚嶏紝閫夋嫨Save As鈥︼紝灏嗚鍙橀噺淇濆瓨涓篗AT鏂囦欢銆3.鍒╃敤save鍛戒护淇濆瓨...
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绛旓細function [theta1,theta2,theta3]=lhm_ex(x,y,z)syms theta1 theta2 theta3 theta=vpasolve((x+126+230*cos(theta1))^2+y^2+(z-230*sin(theta1))^2==500^2,(x-126-230*cos(theta2))^2+y^2+(z-230*sin(theta2))^2==500^2,(x+230*cos(theta3))^2+(y-431+2+230*...
绛旓細鏄繖涓剰鎬濆搰锛>> syms x x鏄鍙 >> A=[2*x,x-3,3,x;3,4,5*x,2+3*x;4,3,2,1;3,2,3,1]A = [ 2*x, x-3, 3, x][ 3, 4, 5*x, 2+3*x][ 4, 3, 2, 1][ 3, 2, 3, 1]>> det(A)ans = 42*x+12*x^...
绛旓細.970588235 .984313725 .994117647 1];syms a;A = zeros(1,14);for i = 1:14 exp = (1-.02288239239*y(i)-(1-.02288239239)*y(i)^a).^0.5-x(i);if exp == 0 A(i) = nan;else r = solve(exp);A(i) = vpa(r,4);end;end A A = 6.8230 6.2760 6.0470 ...
绛旓細-b1)+a2*10^(-b2)','a1,a2,b1,b2')>>digits(6)%璁剧疆绮惧害 >> a1,a2,b1,b2 a1 = -60.3076 a2 = 0 b1 = -44.1543 b2 = -158.399 姝ゆ椂寰楀埌鐨勮Вa1,a2 b1,b2涓虹鍙穝ym鍨 瑕佽浆鎹负鏁板煎瀷鐩存帴鐢╝1=double(a1),...鍏朵粬绫讳技杞崲涓烘暟鍊艰В鍗冲彲锛佸笇鏈涜В鍐充簡浣犵殑闂锛
绛旓細杩欐牱鐨勯棶棰樺疄闄呭氨鏄鐢╩atlab瑙ｆ柟绋嬬粍銆傚彲浠ヨ瘯璇曚娇鐢╯olve鍛戒护瑙ｅ喅 syms x [x^2+x x^3+5;x x+6]*[x^3 1;x^2-1 x]*[3;0]ans = 3*(x^2+x)*x^3+3*(x^3+5)*(x^2-1)3*x^4+3*(x+6)*(x^2-1)鍒欑敤 [x,y]=solve('3*(x^2+x)*x^3+3*(x^3+5)*(x^2-1)...
