Before I start... this is not cheating or anything. I made sure with my math teacher that I was allowed to use helper applications on the test as showing work is still required. This is just to use if I am right or not.
So I use this TI-89 apps called Conic( http://endeavor.ticalc.org/objects/278.html ) but how in the world do I type in my equations... I am a total fool at this part.
For example a parabola equation in the book looks like x = y^2 - 4y + 1 in the but the program wants it in a(x-h)^2+k form.... or even simple ones such as x^2=-20y what is what exactly... because I am now confused.
Which is what variable??
Ellipses
Program equation:
(x-h)^2 __ (y-k)^2
------- + ------- = 1
a^2 ___ b^2
Book problem:
4x^2 + 25y^2 = 100 which is what variable??
last one...
Hyperbolas
Program:
(x-h)^2 _(y-k)^2
------- - ------- = 1 (other equation = y & x reversed)
a^2___b^2
Book problem:
y^2 _ x^2
--- - --- = 1
4___9
How am I supposed to define an undefined part of the problem (x & y) which it keeps asking for....
Any help would be greatly appreciated!!
Yvo
PS.... the board wont allow more then one space between text so some problems (such as the y over something problem) might look weird.
So I use this TI-89 apps called Conic( http://endeavor.ticalc.org/objects/278.html ) but how in the world do I type in my equations... I am a total fool at this part.
For example a parabola equation in the book looks like x = y^2 - 4y + 1 in the but the program wants it in a(x-h)^2+k form.... or even simple ones such as x^2=-20y what is what exactly... because I am now confused.
Which is what variable??
Ellipses
Program equation:
(x-h)^2 __ (y-k)^2
------- + ------- = 1
a^2 ___ b^2
Book problem:
4x^2 + 25y^2 = 100 which is what variable??
last one...
Hyperbolas
Program:
(x-h)^2 _(y-k)^2
------- - ------- = 1 (other equation = y & x reversed)
a^2___b^2
Book problem:
y^2 _ x^2
--- - --- = 1
4___9
How am I supposed to define an undefined part of the problem (x & y) which it keeps asking for....
Any help would be greatly appreciated!!
Yvo
PS.... the board wont allow more then one space between text so some problems (such as the y over something problem) might look weird.