tangent function/3D point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34713 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
tangent 2D curve/3D point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34714 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Parabola focus on the fly

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34715 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
tangent implicit poly/3D point

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34716 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34717 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34718 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34719 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34720 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34721 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
First Phone App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34722 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Neutralize tangent line/implicit poly

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34723 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e