I need to make some frequency responses where I made an frequency array according to the preferred numbers R40, fR40. Later I need to find the indices in another array which corresponds to the frequencies in fR40. The problem is that MatLab returns an empty array when I use find. I find out that the problem lies with some of numbers from the R40. Fx 2.12 and 2.24.
When typing (2.24*10)-22.4 in the command window yields 3.5527e-015.
Adding one decimal more fx 2.241 and 22.41 yields 0 as expected.
Can someone explain to me why it is that this happens?