MATLAB实验二实验报告.pdf

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1、MATLAB 实验二实验报告一eg1A=3,1,-1;1,2,4;-1,4,5B=3.6;2.1;-1.4x=BAx=0.73980.1138-0.113822 28eg2a=1,2,3;3,4,5;3,2,1b=1,2;3,4;5,6c=a*bc=40 5214 20-1.6506-0.1747+1.5469i-1.5469i-0.1747二eg1a=1 2 3 4roots(a)roots(1 2 3 4)ans=eg2poly(-1.6506-0.1747+1.5469i-0.1747-1.5469i)ans=1.0000 2.0000 3.00014.0001eg3M 文件syms x

2、limit(cos(1/x),x,0)x=-1:0.0001:-0.01;y=cos(1./x);plot(x,y)syms xlimit(sin(x)/x,x,0)x=-1:0.0001:-0.01;y=cos(x)./x;plot(x,y)eg4M 文件syms xy=x2*log(1+x);=3.1363ansdiff(y,2),x=1;eval(ans)eg4x 1x,y=solve(sin(x+y)-exp(x)*y=0,x2-y,x,y)解得y 1+0.9685i-0.4056-0.4056-0.9685i 0.6065+0.0915i0.6065-0.0915i-0.40180

3、2-5 0 1)ans=2.1A：输入roots(6syms x ay=log(x+(a2+x2)(1/2);B:ans=(1+1/(a2+x2)(1/2)*x)/(x+(a2+x2)(1/2)diff(y,x,1);eval(ans)2.2M 文件symsnlimit(-1)n+4n)/(3(n+1)+4(n+1),n,inf)ans=1/42.3x,y=solve(x2+x*y+y=3,x2-4*x+13,x,y)x=2+3*i-2/3-10/3*iy=2-3*i-2/3+10/3*i2.4x=input(请输入 x=);if 0=x&x=1y=xelseif 1=x&x2y=2-xelsey=0end2.5a=150,-100,-50;-100,110,0;-50,0,170;b=50;0;0;x=abf-3)f(2)f()1.12651.02410.33132.6sum=0;for i=0:50sum=sum+2i;endstr=计算结果为:,num2str(sum)str=计算结果为:2.251800e+015