Texas Instruments TI-84 Plus Silver Edition Graphic Calculator "variables graph" Questions

ti 84 plus wont graph when i try to graph it says ERR:UNDEFINED You might have used an inappropriate variable name. For functional graphs y=F(x), the independent variable must be X For parametric ...

when I try to graph it says argument error Your function is not correctly defined. If graph is function y=f(x), variable must be x; if graph is polar, variable must be theta, and if graph is ...

...graph in my Ti 89 graphing calculator in the y= editor when i enter a function for plotting an error "undefined variable" is displayed That means one (or more) of the variables you have in your ...

When i am graphing and I enter- Y1=Sin(theta) it does not graph it and says syntax error When drawing function graphs of type Y1=, the name of the independent variable should be X For polar graphs r=.

...You can type in an x-variable by pressing the x-var key. For other graph types, the variables r, theta, t, can be enter by pressing the appropriate function key. from the graph equation entry

graph linear equation in two variables hi i am a new user of the graphing calculator can u tell me how to graph linear equation in two variables? example -2/3x +2. can u give me step by step guidance.

the sign cos,sin and tan cannot work. Nothing appears when i press the trigo buttons. help. When drawing function graphs of type Y1=, the name of the independent variable should be X For polar graphs ...

...one that used to work, and now i cant graph anything. resetting the variables did not work. At first type next: Home, then 2nd F6: 2 option NewProb.Then graphing function, for example ...

...graph is archived. Archived variables are displayed in the memory manual with an asterisk to the left of the variable name. Press 2nd [MEM] 2 1 to see the variables in memory. Use up/down-arrow to ...

every time i try to graph a function "undefined variable" pops up on the screen and then i can't get anywhere after that Do you have a function somewhere (not necessarily y1) that is ...