@kimberly111103

clc clear A = [1 -2 3; 4 9 -6; -7 8 5]; B = A(1, :); C = A(:, 2);

clc clear % Data t = 1:10; p_data = [26.1 27.0 28.2 29.0 29.8 30.6 31.1 31.3 31.0 30.5]; % Fits p1 = polyfit(t, p_data, 1); % linear p2 = polyfit(t, p_data, 2); % quadratic

clc clear % Data t = [0 0.5 1 1.5 2 2.5 3 3.5 4]; v = [100 62 38 21 13 7 4 2 3]; % Fit exponential: v = a*e^(bt) p = polyfit(t, log(v), 1); b = p(1);

clc clear x_a = [25 30 35 40 45]; y_a = [5 260 480 745 1100]; % Power fit: y = a*x^b → log(y) = log(a) + b*log(x) p_a = polyfit(log(x_a), log(y_a), 1); b_a = p_a(1); a_a = exp(p_a(2));

clc clear t=linspace(0, 0.2, 1000); x=(0.5+5*t).*sin((2*pi/3)*t).*cos(4*pi*t); y=(0.5+5*t).*sin((2*pi/3)*t).*sin(4*pi*t); z=(0.5+5*t).*cos((2*pi/3)*t); plot(x, y, z, 'b', 'LineWidth',2)

clc clear x=linspace(0, 5, 100) y1=sin(1i*x); y2=1i*sinh(x); plot(x, real(y1), 'b', x, real(y2), 'r--') hold on

clc clear A=[0 -7 6; 5 -4 3; 10 -1 9; 15 1 0; 20 2 -1]; t= A(:,1);

clc clear a=10; f= @(x) a*cosh(x/a); fplot(f,[-20, 30]) grid on

clc clear f= @(x) x.*tan(x)-9; fplot(f, [0, 20]) grid on

clc clear x=linspace(-1, 1, 100); y=linspace(-1, 1, 100); [X,Y]=meshgrid(x,y); Z= sin(X.^2+Y.^2).*exp(-5*X.^2+Y.^2); figure;

clc clear x= -5:0.1:10; y=zeros(size(x)); for i=1:length(x) if x(i) < -1 y(i)= exp(x(i)+1); elseif x(i)<=5

clc clear x=0; dx=0.01; while 10*(1-exp(-x/4)) < 9.8 end xmax=x;

clc clear if(x < y) && (z < 10) w = x*y*z; end

clc clear x = [-3, 0, 0, 2, 5, 8]; y = [-5, -2, 0, 3, 4, 10]; a=y<~x b=x&y c=x|y d=xor(x,y)

clc clear price_A = [19, 18, 22, 21, 25, 19, 17, 21, 27, 29] price_B = [22, 17, 20, 19, 24, 18, 16, 25, 28, 27] price_C = [17, 13, 22, 23, 19, 17, 20, 21, 24, 28] a=sum((price_A > price_B) & (price_A > price_C)); b=sum((price_A > price_B) | (price

clc clear x=linspace(1,100,1000); f1=exp(x); f2=x.^3; figure; subplot(2,2,1)

clc clear f=@(x) 20*x.^2-200*x3; x=0:0.01:10 y=f(x);

clc clear h=100; v0=50; g=9.81; t=height_time(h,v0,g); disp(t)

clc clear x=-3:0.1:3; left=sinh(x); right=(exp(x)- exp(-x))/2; plot(x,left,'r','LineWidth',2) plot(x,right,'b--','LineWidth',2)

clc clear x=-5 +8i; y=10 + 5i; xy=x*y; mag_xy=abs(xy); angle_xy = angle(xy);