Please help me ASAP. Plz don't spend time on explanation. Please just share your work and highlight the answer. Appreciate,

Here is the formula sheet that you may need:

Gradient vector Vf = 21 1 + 95 j + 95 k Directional Derivative (Daf)po = (ds) apo )= ( Vf ) po . a Double Integral If f(x.y)dxdy = [f f(r cos,r sin @)rarde Mass = mass Jf x8 (x,y)dxdy; y = mass /[ yo(x, y) dxdy; 1x = [JyzodA; lo = [[ (x2 + y2)8dA Change- of-variable theorem If, f (x, y)dady = [ f(x(u, v), y(u, v)Idet /| dudv ax det/ = au av ay ay au av Triple Integral If, f(x.y,z ) av Cylindrical Coordinates: x = r cos 0 ; y = rsin0 ; z = z dxdydz = dz rdr d0, if you integrate z first, then r and 0 Spherical Coordinates: z = p coso ; x = p sino cos0 ; y = p sind sine dxdydz = p2 sin p dpdode Mass = SIS, 6(x, y, z)dV ; Iz = Slo (x2 + y?)odv ; x = Mass Slo xodv Curl F = M(x, y, z) i + N(x, y, z) j + P(x, y,z) k VX F = a ax dy az ap _ON) it (az - ax) it ( ox - ay) k IM N pl Divergence V . F = OM + ON + ap Vector Line Integral C: r(t) = x(t)i + y(t) / + z(t) k; F = M(x, y, z)i + N(x, y, z)j + P(x, y, z) k F . Tds = [ F .dro) at = [ F . di(t) = [Mdx + Ndy + Pdz Fundamental theorem of calculus for line integral If F = Vf, SF . dr = f(P,) -f(Po) Po and Pi are the start and end points of curve C.Surface Integral SS F . AdA = SS F . dA Plane z = a: n = th; dA = dxdy Spherical surface: fi = + 1(x, y,z); dA = a2 sin $ dodo; z = a coso; x = a sin $ cos0 ; y = a sin $ sin 0 Cylindrical surface: f = _ _(x, y,0); dA = a dz d0; x = a cos 0 ; y = asin 0 General surface (explicit): z = f(x, y), dA = fidA = 4 0 at (a, b) 2. f has a local minimum at (a, b) if fxx > 0 and fxxfyy - fry > 0 at (a, b) 3. f has a saddle point at (a, b) if fxxfyy - fly