what does 1 indicate in f=100:1:400?

my program is f=100:1:400 X=2*3.14*f Z=r+j*X plot(f,Z)

[Matt J]

Aside from the answer(s) given to you below, note that the "1" is unnecessary. Whoever wrote your code could have just done

f=100:400;

since an increment of 1 is the default.

[monali]

it simply means that the middle value is just increment only, right?

[Matt J]

yes.

Answer 1

[the cyclist]

The statement

 >> f = 100:1:400

tells MATLAB to create a vector of values from 100 to 400, with a spacing of 1. Similarly,

 >> f = 100:100:400

would result in

 >> f = [100 200 300 400]

You can read a bit more by typing

 >> help :