实验6 Matlab数值计算(3)

实验6 Matlab数值计算

1.2540 1.1908 1.1892 1.0668 0.2193

0.0593 -0.0376 -0.9219 -1.2025 -1.5937

0.3273 -0.0198 -0.0956 -1.4410 -2. Columns 7 through 12

2.6494 2.8292 3.0000 3.1636 3.3186 3.4661

Columns 13 through 18

3.6069 3.7422 3.8729 4.0000 4.11707

0.5711 0.1746 -0.0592 -0.1567 -0.8323 >>

2.

用3次多项式方法插值计算1-100之间

整数的平方根。

x=[1,4,9,16,25,36,49,64,81,100]; y=x.^(1/2); x1=[1:100];

y1=interp1(x,y,x1,'cubic'); disp('1到100的根为：'); y1

>> 1到100的根为： y1 =

Columns 1 through 6

1.0000 1.3729 1.7125 2.0000 2.2405 2.4551

237 4.2435

Columns 19 through 24

4.3599 4.4730 4.5832 958 4.8988

Columns 25 through 30

5.0000 5.0993 5.1966 857 5.4777

Columns 31 through 36

5.5681 5.6570 5.7446 160 6.0000

Columns 37 through 42

6.0829 6.1647 6.2454 035 6.4810

Columns 43 through 48

6.5577 6.6334 6.7082 556 6.9281

Columns 49 through 54

7.0000 7.0712 7.1416 804 7.3487

Columns 55 through 60

7.4164 7.4835 7.5500 812 7.7459

Columns 61 through 66

7.8102 7.8739 7.9372 623 8.1242

Columns 67 through 72

4.6907 4.75.2921 5.3

5.8309 5.96.3249 6.46.7823 6.87.2113 7.27.6159 7.68.0000 8.0