J jwpaine Full Member Joined Mar 10, 2007 Messages 719 Jun 1, 2011 #1 Need a push in the right direction.... The Line {x = 2 + 2t, y = 1, z = -2 + 3t} is tangent to the surface z = f(x,y) at the point (a,b,c). Find f_x(a,b) Do I just need to compute the partial derivative and plug in that point?
Need a push in the right direction.... The Line {x = 2 + 2t, y = 1, z = -2 + 3t} is tangent to the surface z = f(x,y) at the point (a,b,c). Find f_x(a,b) Do I just need to compute the partial derivative and plug in that point?
D Deleted member 4993 Guest Jun 1, 2011 #2 jwpaine said: Need a push in the right direction.... The Line {x = 2 + 2t, y = 1, z = -2 + 3t} is tangent to the surface z = f(x,y) at the point (a,b,c). Find f_x(a,b) Do I just need to compute the partial derivative and plug in that point? Click to expand... What is the equation of gradient of the surface? What is the relationship between tangent line and gradient of the surface.
jwpaine said: Need a push in the right direction.... The Line {x = 2 + 2t, y = 1, z = -2 + 3t} is tangent to the surface z = f(x,y) at the point (a,b,c). Find f_x(a,b) Do I just need to compute the partial derivative and plug in that point? Click to expand... What is the equation of gradient of the surface? What is the relationship between tangent line and gradient of the surface.
