3) y = 1/ax3 – B/x√x + Cx4 + π2 найти; y'
y`=(a·(x–3))`–(b·x–3/2)`+(cx4)`+(π2)`= =a·(–3)·x–4–b·(–3/2)·x–5/2+c·4x3+0= =(–3a/x4)+(3/2)b·(1/√x5)+4cx3