Rewriting the set of equations in terms of new variables, using replacement rules when the expression contains partial derivatives
16993
Can I simplify an expression into form which uses my own definitions?
48860
Why won't Mathematica Solve a set of two equations for one variable?
94256
Partial factorization of multivariate polynomials in terms of given polynomials
56424
Using D to find a symbolic derivative
126940
Converting expressions to polynomial form
20280
Proving that expression is equivalent to the definition of derivative
41650
Large braces for specifying values of variables by condition
21813
Symbolic derivatives are being calculated numerically
122957
Intuitive proof of multivariable changing of variables formula (jacobian) without using mapping and/or measure theory?
28374
calculus expressions
107927
Replace expressions with symbols
142651
Where can you perform variable substitution in an equation?
32642
The formalism behind integration by substitution
27862
Symbols of derivatives
59165
Derivative of a linear transformation.
79822
Problems with partial derivatives.
133948
Shrinking or splitting some equations in a group of equations