y derivative of the fourth (4th) order minus 3y derivative of the third (3rd) order plus 3y two strokes of the second (2nd) order minus y stroke first (1st) order equally x minus 3
y derivative of the fourth (4th) order minus three y derivative of the third (3rd) order plus 3y two strokes of the second (2nd) order minus y stroke first (1st) order equally x minus 3