Math Chapter Wise

Ar2/sin 2θ B2r2/sin 2θ Cr2/cos 2θ D2r2/cos 2θ

A0 Bu C2u D–u

A2 2 2 2 2 2 f f f. 0 x y xdy ∂ ∂ ∂ − > ∂ ∂ ∂ B2 2 2 2 2 2 f f f. 0 x y xdy ∂ ∂ ∂ − < ∂ ∂ ∂ C2 2 2 2 2 2 f f f. 0 x y xdy ∂ ∂ ∂ − = ∂ ∂ ∂ DNone of these

Axyz 2 2 2 e 1 xyz 2x y z + + Bxyz 3 3 3 e 1 xyz 2x y z + + Cxyz 2 2 2 e 1 3xyz x y z + + Dxyz 3 3 3 e 1 3xyz 2x y z + +

Afx = 0, fy = 0, AC < B2 and A > 0 Bfx = 0, fy = 0, AC > B2 and A < 0 Cfx = 0, fy = 0, AC < B2 and A < 0 Dfx = 0, fy = 0, AC > B2 and A > 0