0為初值4*pi為4π表示終止0.1為步長相當於每次增加的長度

x=0:0.1:4*pi

生成一個矩陣，從0值開始，4π結束。步長為0.1

>>x=0:0.1:4*pi

x=

Columns1through9

00.10000.20000.30000.40000.50000.60000.70000.8000

Columns10through18

0.90001.00001.10001.20001.30001.40001.50001.60001.7000

Columns19through27

1.80001.90002.00002.10002.20002.30002.40002.50002.6000

Columns28through36

2.70002.80002.90003.00003.10003.20003.30003.40003.5000

Columns37through45

3.60003.70003.80003.90004.00004.10004.20004.30004.4000

Columns46through54

4.50004.60004.70004.80004.90005.00005.10005.20005.3000

Columns55through63

5.40005.50005.60005.70005.80005.90006.00006.10006.2000

Columns64through72

6.30006.40006.50006.60006.70006.80006.90007.00007.1000

Columns73through81

7.20007.30007.40007.50007.60007.70007.80007.90008.0000

Columns82through90

8.10008.20008.30008.40008.50008.60008.70008.80008.9000

Columns91through99

9.00009.10009.20009.30009.40009.50009.60009.70009.8000

Columns100through108

9.900010.000010.100010.200010.300010.400010.500010.600010.7000

Columns109through117

10.800010.900011.000011.100011.200011.300011.400011.500011.6000

Columns118through126

11.700011.800011.900012.000012.100012.200012.300012.400012.5000

>>