Sweeping_Robot的博客

s=polyfit(x,y,2);t=0:1:100;w=s(1)*t.^2+s(2)*t+s(3);S=sum((x-mean(x)).^2);A=sum((w-mean(x)).^2);r2=1-A/S

syms t;g=t*exp(-3*t);laplace(g)f=8*sin(5*t)-exp(-t)*cos(2*t);laplace(f)syms s;g=1/s-(2*s^2+3)/(s^2+9);ilaplace(g)f=s/(s^2-49)-3/(s^2-9);ilaplace(f)g=(2/s)/(1+s);ilaplace(g)fourier(t^2...

syms x a;f=x.*exp(-a*x);int(f)syms b x c;f=1/sqrt(x^2+b*x+c);int(f)f=x*tan(x);int(f)syms y;f=sin(y*x);int(f^2,y)f=exp(-3*x)*cos(x);int(f,0,inf)f=sqrt(x);int(pi*f^2,0,1)f=x^2;int(p...

limit(f,x,3,'left')f=sin(4*x)/x; limit(f)g=(x^2-3*x)/x;ezplot(1/g)hold onplot(double(solve(g))*[1,1],[-2,2],'--');hold offfor i=0:10:30s=dsolve('Dx=-2*x+8')f=subs(s,'C1',i);ezplot(f,[-1,1])...

x=[0:0.01:10];y=cos(x);plot(x,y),xlabel('x'),ylabel('cos(x)');fplot('exp(-2*t)*sin(t)',[0,4]),xlabel('t'),ylabel('f(t)'),title('阻尼弹力')x=[-6:0.01:6];y=tanh(x);plot(x,y),grid on```cppt=[0:0.0...

d=x^2+sqrt(5)*x-pi;solve(d);ezplot(d,[2,4,0,1])simplify(tan(x)^2-sec(x)^2)s=taylor(tan(x));T10 = taylor(y, x, 'Order', 10)

a=[130,138,145,150,152,155,160,164,165,167,170,172,175];b=[2,1,3,6,1,3,1,1,3,4,3,2,1];n=sum(b);raw=[];for i =1:length(b) new=a(i)*ones(1,b(i)); raw=[raw,new];endave=mean(raw);md=median(...