求大神指点，matlab2018a中关于解代数方程5x+2exp（1）=0 matlab中exp用法的问题
matlab2018\u89e3\u65b9\u7a0b\u5bf9\u4e8e\u4f4e\u7248\u672c\u7684matlab\uff0c\u4f7f\u7528\u8fd9\u4e2a\u8bed\u53e5\u662f\u6ca1\u6709\u95ee\u9898\u7684\u3002\u800c\u5bf9\u4e8ematlab2018\u4f7f\u7528\u8fd9\u4e2a\u8bed\u53e5\u5c31\u4e0d\u5408\u9002\u4e86\u3002\u5e94\u8fd9\u6837\u6765\u5199
>> syms x
>> s=solve(x^2+x+sqrt(2)==0)
MATLAB\u5e38\u7528\u51fd\u6570\u6559\u5b66\u89c6\u9891\u2014exp\u51fd\u6570
绛旓細鎴戞槸杩欎箞璁や负鐨!%鐢熸垚300x300娴嬭瘯鏁版嵁 涓轰究浜庨獙璇侊紝鏈涓1/3璁句负鐧借壊锛0锛夛紝鏈涓1/3璁句负榛戣壊锛1锛墄=rand(300,300)>0.5;x(1:100,:)=0;x(201:end,:)=1;缁樺浘骞惰缃皟鑹叉澘 image(x)set(gcf,'Colormap',[111;000])
绛旓細鍥犱负浣犺皟鏁翠簡y杞寸殑鑼冨洿锛屽浘鍍忎笉鍦ㄤ綘鐨剏杞磋寖鍥翠箣鍐 fs=200;deltaf=1;T=1/fs;L=1/deltaf;N=floor(fs/deltaf)+1;t=0:0.005:1;freq=0:deltaf:fs;f_t=sin(2*pi*500*t)+0.6*sin(2*pi*800*t);f_t_rectwin=f_t*rectwin(201);f_t_hann=f_t*hann(201);f_t_hamming=f_t*...
绛旓細clear all x=-10:0.1:10;%x鐨勫彇鍊艰寖鍥 N=length(x);%x鐨勫悜閲忛暱搴 y=sin(x);%浜х敓y plot(x,y,'o')%鐢诲浘锛岃摑鑹插湀鍦 y_noise=y+rand(1,N);%鍔犲櫔澹 pp3=polyfit(x,y_noise,9)%9娆℃嫙鍚堬紝pp涓哄洖褰掔郴鏁 yy=polyval(pp3,x);%閫氳繃鍥炲綊绯绘暟鍜寈x寰楀埌yy hold on% 鍦ㄥ悓涓涓湴鏂圭敾鍥 ...
绛旓細鍋囪浣犺鍋氱殑鏄竴涓猍0,10]涓婂潎鍖鍒嗗竷鐨勪竴涓殢鏈哄彉閲忥紝閭ｄ箞鎴戜滑灏卞彲浠ヨ繖鏍峰仛锛歺 = 10*rand([10000,1]);xi = linspace(-10,20,201);F = ksdensity(x,xi,'function','cdf');plot(xi,F);瑙ｉ噴涓涓嬪彉閲忥紝x鏄骇鐢熺殑闅忔満鏁帮紝鍏辨湁10000涓偣锛岀偣瓒婂锛屾鐜囧瘑搴﹀嚱鏁拌秺鎺ヨ繎浜庣悊鎯冲垎甯冨嚱鏁般俽and鏄...
绛旓細杩欐牱鐨勫彲浠ヤ箞 浠ｇ爜濡備笅锛歺1=-1*ones(1,401);y1=-2:0.01:2;x2=ones(1,401);x3=2*ones(1,401);x4=-1:0.01:1;y2=2*ones(1,201);x5=1:0.01:2;y3=-2*ones(1,101);plot(x1,y1,x2,y1,x3,y1)hold onplot(x4,y2)hold onplot(x5,y3)axis([-3 3 -3 3])xlabel('X...
绛旓細R=xlsread('BIAOGE');%璇诲彇excel閲岄潰鐨勬暟鎹紝琛ㄦ牸鍚嶅瓧瑕佹敼鎴愬瓧姣嶏紝鐒跺悗鏀惧湪MATLAB鐩綍涓 N=201;%N涓虹涓鍒楁暟鎹暟 Y=R(1:N);%绗竴鍒楄祴缁橸 X=R(N+1:2*N);%绗簩鍒楄祴缁橷 plot(Y,X)%鐢诲浘
绛旓細鎴戠殑matlab 2014a杩愯姝ｇ‘銆倀=0.5:.1:1.5;u=stepfun(t, 0)u = 0 0 0 0 0 1 1 1 1 1 ... 1 1 1 1 1 1 1 浼拌浣犲畨瑁呬笉瀹屾暣(control)锛屾垨瀹夎涓猰atlab 2014a璇曚竴璇曘侰:\Program Files\MATLAB\R2014a\toolbox\control\ctrlo...
绛旓細绗簩棰橈細>> syms y(x)Dy = diff(y);D2y = diff(y,2);dsolve(D2y == -1/y^(3), y(1) == 1, Dy(1) == 0)杩愯缁撴灉鏄細璀﹀憡: Unable to find explicit solution.> In dsolve (line 201)ans = [ empty sym ]璇存槑鏃犺В锛屼篃鍙兘鏄▼搴忔病鎵惧嚭鏄惧紡瑙ｏ紝鎹釜鏂规硶涔熻鑳芥壘鍒般>>...
绛旓細fliplr(F)灏辨槸鎶婄煩闃礔宸﹀彸棰犲掞紝寰楀埌缁撴灉杩樻槸201*501 F(2:501)琛ㄧず鐨勬槸濡傛灉鎶奆鎷夌洿浜嗭紙鎶婄浜屽垪鎺掑埌绗竴鍒楃殑鍚庨潰锛岀劧鍚庣涓夊垪锛岀鍥涘垪...鐢变簩缁村彉鎴愪竴缁达級锛屽彇鍑鸿繖涓暱闀块槦浼嶄腑鐨勭2鍙峰埌绗501鍙凤紝缁撴灉涓轰竴涓垪鍚戦噺1*500 [A,B]琛ㄧず鐢辩煩闃礎銆丅鎸夌収浠庡乏鑷冲彸鐨勫叧绯诲緱鍒扮殑鏂扮殑鐭╅樀锛屾垜浠煡閬...
绛旓細杈撳叆锛歱olygon('')涓烘病鏈夎緭鍏ラ噺锛沺olygon(n)涓烘湁杈撳叆閲 浠ｇ爜濡備笅锛歠unction polygon(n)if(isempty(n))t = linspace(0,2*pi);x = sin(t);y = cos(t);plot(x,y)title('鍗曚綅鍦') ;return;end if ((n<3)||(n~=fix(n)))disp('n蹇呴』涓嶅皬浜3,涓斾笉鑳戒负闈炶嚜鐒舵暟锛');return;else...
