diff --git a/a2_1_1.m b/a2_1_1.m
new file mode 100644
index 0000000..72860a2
--- /dev/null
+++ b/a2_1_1.m
@@ -0,0 +1,9 @@
+% 学号为24110901003
+% 学号最后的非零第一位、二位数字，u=
+u=3;
+v=1;
+% 因为比较复杂，将分子分母分开计算
+m=(exp(u)+v)^2;
+n=v^2-u;
+result=m/n;
+disp(result)
\ No newline at end of file
diff --git a/a2_1_2.m b/a2_1_2.m
new file mode 100644
index 0000000..3357f36
--- /dev/null
+++ b/a2_1_2.m
@@ -0,0 +1,9 @@
+% 学号为24110901003
+% 学号最后的非零第一位、二位数字，u=3，v=1;
+u=3;
+v=1;
+% 因为比较复杂，将分子分母分开计算
+m=sqrt(u-3*v);
+n=u*v;
+result=m/n;
+disp(result);
\ No newline at end of file
diff --git a/a2_3.m b/a2_3.m
new file mode 100644
index 0000000..20dcda4
--- /dev/null
+++ b/a2_3.m
@@ -0,0 +1,2 @@
+A=[3,0,0,0;0,0,0,0;0,0,0,0;0,0,0,0;0,0,0,7];
+B=sprank(A)
\ No newline at end of file
diff --git a/a2_5.m b/a2_5.m
new file mode 100644
index 0000000..eb590c9
--- /dev/null
+++ b/a2_5.m
@@ -0,0 +1,5 @@
+% 24110901003
+a=3;
+b=a>5 % 表达式值为0
+a(b)=sqrt(a(b)) % 值为3
+a(~b)=a(~b).^2 % 值为9
\ No newline at end of file
diff --git a/a2_6.m b/a2_6.m
new file mode 100644
index 0000000..23c9ba9
--- /dev/null
+++ b/a2_6.m
@@ -0,0 +1,16 @@
+% 学号24110901003
+% a=3,b=1,c=9;
+a=3;
+b=1;
+c=9;
+% 定义x
+syms x
+% 方程表达式
+f=a*x^2+b*x+c;
+% 用solve函数来解
+solve(f==0)
+% 输出如下
+% ans =
+% 
+% - (107^(1/2)*1i)/6 - 1/6
+%   (107^(1/2)*1i)/6 - 1/6
\ No newline at end of file
diff --git a/b3_5.m b/b3_5.m
new file mode 100644
index 0000000..830a5ac
--- /dev/null
+++ b/b3_5.m
@@ -0,0 +1,10 @@
+% c取值为学号最后的非零第一位数字
+c=3
+switch (c) 
+    case {1, 3, 5, 7, 9}, 
+    disp('The value is odd.'); 
+    case {2, 4, 6, 8, 10}, 
+    disp('The value is even.'); 
+    otherwise
+    disp('The value is out of range.'); 
+end
diff --git a/b4_3.m b/b4_3.m
new file mode 100644
index 0000000..4fe6df2
--- /dev/null
+++ b/b4_3.m
@@ -0,0 +1,13 @@
+% 定义x,y
+x=6
+y=6
+if (x>=0 && y>=0)
+    r=x+y
+elseif (x>=0 && y<0)
+    r=x+y^2;
+elseif (x<0 && y>=0)
+    r=x^2+y;
+elseif (x<0 && y<0)
+    r=x^2+y^2;
+end
+disp(x)
\ No newline at end of file
diff --git a/deg2rad.m b/deg2rad.m
index d6ed69a..94b3b46 100644
--- a/deg2rad.m
+++ b/deg2rad.m
@@ -1,9 +1,6 @@
-
-
-
 function jrad=deg2rad(deg)
 degd=fix(deg);
 degf=(deg-degd)*100;
 degm=fix(degf);
 degs=(degf-degm)/36.0;
-jrad=(degd+degm/60.00+degs)* pi / 180.0;
+jrad=(degd+degm/60.00+degs)* pi / 180.0;
\ No newline at end of file
diff --git a/lab1.m b/lab1/lab1.m
similarity index 100%
rename from lab1.m
rename to lab1/lab1.m
diff --git a/lab6/exercise6_1.m b/lab6/exercise6_1.m
new file mode 100644
index 0000000..260af66
--- /dev/null
+++ b/lab6/exercise6_1.m
@@ -0,0 +1,4 @@
+A=[0,9,6;1,3,0];
+B=[1,4,3;1,5,0];
+A&B
+A./B
\ No newline at end of file
diff --git a/lab6/exercise6_10.m b/lab6/exercise6_10.m
new file mode 100644
index 0000000..edc1b59
--- /dev/null
+++ b/lab6/exercise6_10.m
@@ -0,0 +1,3 @@
+syms x;
+eq1=x^4-4*x^3+12*x-9==0;
+x=solve(eq1,x)
\ No newline at end of file
diff --git a/lab6/exercise6_8.m b/lab6/exercise6_8.m
new file mode 100644
index 0000000..7c97417
--- /dev/null
+++ b/lab6/exercise6_8.m
@@ -0,0 +1,8 @@
+for k=1:10
+    if k>6
+        break
+    else
+        arry(k)=k;
+    end
+end
+disp(arry);
\ No newline at end of file
diff --git a/lab6/exercise6_9.m b/lab6/exercise6_9.m
new file mode 100644
index 0000000..dc524d6
--- /dev/null
+++ b/lab6/exercise6_9.m
@@ -0,0 +1,7 @@
+i=2;
+a=2i;
+b=2*i;
+c=2*sqrt(-1);
+a
+b
+c
\ No newline at end of file
diff --git a/lab6/exercise6_c_1.m b/lab6/exercise6_c_1.m
new file mode 100644
index 0000000..5c97da1
--- /dev/null
+++ b/lab6/exercise6_c_1.m
@@ -0,0 +1,4 @@
+A=[1,2,3;4:6;7:9];
+C=[A;[10,11,12]];
+D=C(1:3,[2,3]);
+E=C(2,[1,2]);
diff --git a/lab6/exercise6_c_2.m b/lab6/exercise6_c_2.m
new file mode 100644
index 0000000..91c3cc2
--- /dev/null
+++ b/lab6/exercise6_c_2.m
@@ -0,0 +1,9 @@
+x=[0,1,0,2,0,3,0,4];
+for k=1:8
+    if x(k)==0
+        x(k)=k;
+    else
+        x(k)=2*k+1;
+    end
+end
+disp(x)
\ No newline at end of file
diff --git a/lab6/exercise6_c_3.m b/lab6/exercise6_c_3.m
new file mode 100644
index 0000000..5bc59a7
--- /dev/null
+++ b/lab6/exercise6_c_3.m
@@ -0,0 +1,3 @@
+syms a b c x;
+s=a*x^2+b*x+c;
+solve(s)
\ No newline at end of file
diff --git a/lab6/exercise6_c_4.m b/lab6/exercise6_c_4.m
new file mode 100644
index 0000000..29b70bb
--- /dev/null
+++ b/lab6/exercise6_c_4.m
@@ -0,0 +1,3 @@
+A=[2,3,1,2;1,3,0,1;1,-1,1,8;7,1,-2,2];
+B=[8,6,1,5];
+A\B'
\ No newline at end of file
diff --git a/lab6/exercise6_c_5.m b/lab6/exercise6_c_5.m
new file mode 100644
index 0000000..182836e
--- /dev/null
+++ b/lab6/exercise6_c_5.m
@@ -0,0 +1,7 @@
+t=linspace(0,2*pi,50);
+y1=sin(2.*t-0.3);
+y2=3.*cos(t+0.5);
+plot(t,y1,'-.ro');
+hold on
+plot(t,y2,':b*');
+hold off
\ No newline at end of file
diff --git a/lab6/exercise6_d.m b/lab6/exercise6_d.m
new file mode 100644
index 0000000..2f38469
--- /dev/null
+++ b/lab6/exercise6_d.m
@@ -0,0 +1,8 @@
+for i=100:999
+    a=fix(i/100); % 取百位
+    b=rem(fix(i/10),10); % 取十位
+    c=rem(i,10); % 取个位
+    if a^3+b^3+c^3==i
+        disp(i);
+    end
+end
\ No newline at end of file
diff --git a/lab6/lab6.m b/lab6/lab6.m
new file mode 100644
index 0000000..2a82a8d
--- /dev/null
+++ b/lab6/lab6.m
@@ -0,0 +1,11 @@
+[F,P]=uigetfile('*.pgm;*.jpg;*.jpeg;*.tif;*.tiff;*.bmp;*.png;*.hdf;*.pcx;*.xwd','选择图像');
+imna=strcat(P,F);
+myi=imread(imna);
+figure(1);
+imshow(myi);
+figure(2);
+image(myi);
+bgray=rgb2gray(myi);
+figure(3);
+imshow(bgray);
+imwrite(bgray,'th.bmp','bmp');
\ No newline at end of file
diff --git a/lab6/th.bmp b/lab6/th.bmp
new file mode 100644
index 0000000..f0d2ac9
Binary files /dev/null and b/lab6/th.bmp differ
diff --git a/lab6/屏幕截图 2025-10-26 085153.png b/lab6/屏幕截图 2025-10-26 085153.png
new file mode 100644
index 0000000..a78fdd5
Binary files /dev/null and b/lab6/屏幕截图 2025-10-26 085153.png differ
diff --git a/untitled.m b/untitled.m
new file mode 100644
index 0000000..a618969
--- /dev/null
+++ b/untitled.m
@@ -0,0 +1,3 @@
+A=ones(5,4);
+size(A)
+zeros(size(A))
\ No newline at end of file
diff --git a/untitled12.m b/untitled12.m
new file mode 100644
index 0000000..4affdad
--- /dev/null
+++ b/untitled12.m
@@ -0,0 +1,4 @@
+A=[4,5];
+B=[9,3];
+% 计算两点间距离
+distance=(A(1,1)-B(1,1))^2+(A(1,2)-B(1,2)^2)
\ No newline at end of file
diff --git a/untitled13.m b/untitled13.m
new file mode 100644
index 0000000..3357f36
--- /dev/null
+++ b/untitled13.m
@@ -0,0 +1,9 @@
+% 学号为24110901003
+% 学号最后的非零第一位、二位数字，u=3，v=1;
+u=3;
+v=1;
+% 因为比较复杂，将分子分母分开计算
+m=sqrt(u-3*v);
+n=u*v;
+result=m/n;
+disp(result);
\ No newline at end of file
diff --git a/untitled4.m b/untitled4.m
new file mode 100644
index 0000000..eccd1e0
--- /dev/null
+++ b/untitled4.m
@@ -0,0 +1,19 @@
+% 建立系数矩阵
+A=[-2.0,5.0,1.0,3.0,4.0,-1.0;...
+    2.0,-1.0,-5.0,-2.0,6.0,4.0;...
+    -1.0,6.0,-4.0,-5.0,3.0,-1.0;...
+    4.0,3.0,-6.0,-5.0,-2.0,-2.0;...
+    -3.0,6.0,4.0,2.0,-6.0,4.0;...
+    2.0,4.0,4.0,4.0,5.0,-4.0];
+B=[0.0;1.0;-6.0;10.0;-6.0;-2.0];
+%直接用左除的方式得到结果
+A\B
+% 以下是运行结果
+% ans =
+% 
+%     0.6626
+%    -0.1326
+%    -3.0137
+%     2.8355
+%    -1.0852
+%    -0.8360
diff --git a/untitled6.m b/untitled6.m
new file mode 100644
index 0000000..bc39b47
--- /dev/null
+++ b/untitled6.m
@@ -0,0 +1,16 @@
+% a取值为3
+a=3;
+A=randn(a)
+% 求行列式的值
+det(A)
+
+% A =
+% 
+%     0.7172    1.0347    0.2939
+%     1.6302    0.7269   -0.7873
+%     0.4889   -0.3034    0.8884
+% 
+% 
+% ans =
+% 
+%    -1.8548
\ No newline at end of file
diff --git a/untitled9.m b/untitled9.m
new file mode 100644
index 0000000..e69de29
diff --git a/四、2.m b/四、2.m
new file mode 100644
index 0000000..a5145f1
--- /dev/null
+++ b/四、2.m
@@ -0,0 +1,5 @@
+% 将A\B点坐标全部用矩阵表示
+A=[4,5];
+B=[9,3];
+% 计算两点间距离
+distance=(A(1,1)-B(1,1))^2+(A(1,2)-B(1,2)^2)
\ No newline at end of file