Simplify this question about sine waves

Can anyone simplify this question?

I'm not able to understand how to get values of s1. Is there any formula to find it? Please help.

[Steven Lord]

This looks like a homework question. If it is, you should probably ask your professor or teaching assistant for help.

I will give one hint: this documentation page includes a function that will be of use to you.

Answer 1

[Geoff Hayes]

Daniel - the question description describes the elements of s1 as the values of the sine function when it is given equally spaced arguments that start at zero and extend through n1 periods of the sine. The caveat is that full periods are asked for so that the first element and last element of s1 are zero.

Now think of each period as simply one second of data where the frequency of the sine function is one. To get the equally spaced inputs across n1 periods (or seconds), use linspace as

 n1  = 2;
 pts = 10;
 t   = linspace(0,n1,pts);

The array t will be used as your input (along with the amplitude and frequency) to the sine function which is given by its well-known equation (left for you to determine).

[Daniel Jonnakuti]

thanks a ton.. this was helpful