Kuanzia takriban 20:00 na kuendelea profesa hakueleza kwa uwazi jinsi alivyobadilisha dx.dy hadi r.dr.d(theta). Je, kuna mtu yeyote angenisaidia? Ninamaanisha, nionyeshe hatua kwa hatua. Ningeshukuru sana.[iminent=aqC6F9gUWfOB] Mielekeo mizuri inastahili kutambuliwa.####[['profesa', 'Instructor', 'NEU'], ['dx.dy', 'Mathematical_Related_Concept', 'NEU'], ['r.dr.d(theta', 'Mathematical_Related_Concept', 'NEU']]