Question

How do you graph `y = 1/2 cos 2x`?

Answer 1

see below...

Explanation:

first we need to make the table of values.

`x|y`

`0|1/2`

`pi/4|0`

`pi/2|-1/2`

`(3pi)/2|0`

`pi|1/2`

Now we can plot the graph.