12. [-13 Points] DETAILS SCALCETB 14.6.050. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER If g(x, y) = x2 + y2 7 6x, find the gradient vector Vg(1, 4) and use it to nd the tangent line to the level curve g(x, y) = 11 at the point (1, 4). gradient vector tangent line equation Sketch the level curve, the tangent line, and the gradient vector. 13. [-13 Points] DETAILS SCALCETB 14.6.502.XP. MY NOTES ][ ASKYOURTEACHER ][ PRACTICEANOTHER ] Consider the following equation. my)=nx+4, Fpa,m, u=%{v3i0 (a) Find the gradient of f. WU. y) = (b) Evaluate the gradient at the point P. V78,8)= (c) Find the rate of change of fat P in the direction of the vector u. Duft-8, 8) = Need Help