Using own Packages

Examples:

Needs["pFlach`"]

Needs["pLinAlg`"]

?pFlach`*

?pLinAlg`*

?pFlach`numArea

?numArea

pFlach`numArea[{u^2 - v^2, Log[1 + u + v] Sin[u + v],  
        u Sin[u v]}, 
{u, 0, Pi}, {v, 0, Pi}]

numArea[{u^2 - v^2, Log[1 + u + v] Sin[u + v],  
        u Sin[u v]}, 
{u, 0, Pi}, {v, 0, Pi}]

numArea[{x^2 - y^2, Log[1 + x + y] Sin[x + y],  
        x Sin[x y]}, 
{x, 0, Pi}, {y, 0, Pi}]

?p3D

p3D[{x - y, x^2 + y^2}, {x, 0, 1}, {y, 0, 1}];

?mF

mF[{{1}, {2}}]

?numVecLeng

numVecLeng[{1, 2, 3}]

?vecLeng

vecLeng[{1, 2, 3}]

?vecLen

vecLen[{1, 2, 3}]

?vF

vF[{1, 2, 3}]

Remove[pFlach]

?pFlach`*

?pFlach`numArea

Remove[numArea]