Finding Partial Derivatives with Constrained Variables

Suppose that

Show that the equations

each give depending on which variables are chosen to be dependent and which variables are chosen to be independent. Identify the independent variables in each case.

1.2 Finding limits Graphically To find the limit graphically of a function you have to follow the function from both the positive side and from the negative side of the coordinate system towards the number x approaches. For example, For this function as x approaches -2, if you follow the function from both sides the limit equals 4. 1.3 Finding limits...