3 ms·

I'm sorry I was not clear. It's not the negative part I don't get, it's the "every other number". Other than what? I'm not an english native speaker so it mi

• mhlakhani 12y ago
  "every other number" == "every second number", i.e. the first, third, fifth ... coefficients are positive, while the second, fourth, sixth .. coefficients are negative. Hope this helps.
• jaekwon 12y ago
  "every other X" usually means, every even or every odd X, like: ... 0 1 0 2 0 3 0 4 0 5 ... Every other number is 0 above.