Indeed, though is my preference. typically denotes the Laplace operator.]]>If my memory serves me right, this is the proper symbol for gradient:
If my memory serves me right, this is the proper symbol for gradient:
I... never knew that despite I am a math graduate and often spend my time in math forums. In my country, gradient is generally symbolized as m.
]]>so:
]]>also, you should have -2xk not +2xk
]]>i now need to find the unit normal to the surface
at the point (2,-2,2)