![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=fc9b656b1988bbc024f9e9a4b88519ef.png\")
and the point is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0aa26d5a1c14580fcb19a88a8014f942.png\")
.The equation of ellipse is and the point is .
To find the slope of tangent line, derivative with respect to x to the ellipse equation.
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6925cf182b21434713ba4142f6baf9a6.png\")
Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=99f3b83412b2d48e7de29ab21949a76c.png\")
in the above equation.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=28945c718c13262900967b5579c243c3.png\")
Point-slope form of line equation :![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cbc05d0b5c5df81313f5a014a58a8a3e.png\")
.
Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8c93be99a259813edb92ba6fa3140354.png\")
in the above equation.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3e0db73603dc12238beb46dcebaf3059.png\")