i'm trying to graph an ellipse but only half of it will show up.
2007-06-05 01:09:21 · 4 answers · asked by Jenny V. 2 in Science & Mathematics ➔ Mathematics
when you solve for y (after solving for y^2) , there should
be two solution; a + and a -.
if you plot both, you should have an ellipse.
2007-06-05 01:13:06 · answer #1 · answered by uk_wildcat96 2 · 1⤊ 0⤋
If you're graphing it as a Cartesian function, you'll only get the positive values for y, because the square root function only returns one value, when two values would actually satisfy expressions like x^2 = b. You'll need to graph the opposite of that function at the same time to get the full ellipse. You can also get the full ellipse by graphing it in polar coordinates intead.
2007-06-05 08:11:24 · answer #2 · answered by DavidK93 7 · 0⤊ 0⤋
It is not a function. You need to rewrite it parametrically to graph it properly... Variables x and y as functions of t in parametric mode.
2007-06-05 08:12:00 · answer #3 · answered by nckobra40 3 · 0⤊ 0⤋
in Y2 put: -Y1
2007-06-05 08:11:39 · answer #4 · answered by mikedotcom 5 · 1⤊ 0⤋