Multivariable calculus, using unit vector?
51253
Graphical intuition behind directional derivative interpreted as a(∂f/∂x)+b(∂f/∂y), where  is directional vector of unit length?
152853
What is the intuition behind the unit normal vector being the derivative of the unit tangent vector?
76904
Computing matrix-vector calculus derivatives
70477
Asking the vector form of the equation about velocity
58866
Unit vector notation - both line and hat?
140652
Why does dividing a vector by its norm give a unit vector?
38730
Is it possible to do vector calculus in Mathematica?
71260
Check differentiability of multivariable functions
99316
Multivariate Residue Theorem?
62365
How to use induction to prove the product rule for higher derivatives?
11076
References for multivariable calculus
39159
Finding unit tangent, normal, and binormal vectors for a given r(t)
68215
Proper use of arbitrary number of variables
5416
How does one prove if a multivariate function is constant?
140860
Variable substitution when integrating with Mathematica
54032
dimensional analysis - how to find the dimensions of a variable inside an angle
8844
Higher-order partial derivatives w.r.t. variable raised to some power