Task: Translation
Input (English): English sentence: In 1925, with Friedrichs as his assistant, Courant began work on a second volume of Courant- Hilbert .
Output (Tagalog): Sa 1925, na may bilang Friedrichs kanyang assistant, Courant ay nagsimulang magtrabaho sa isang pangalawang dami ng Courant-Hilbert.