Given an input vector containing a cosine wave of unknown frequency, produce an output vector of the same length containing a cosine wave of twice the input frequency. The output should have the same mean and amplitude as the input.
Solution Stats
Solution Comments
Problem Recent Solvers15
Suggested Problems
-
149 Solvers
-
116 Solvers
-
78 Solvers
-
Rotate input square matrix 90 degrees CCW without rot90
326 Solvers
-
Create an n-by-n null matrix and fill with ones certain positions
142 Solvers
Problem Tags
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
Solution 236170
Clever use of acos(). I didn't think to do that.