How do you find the t variable on a TI-84?

While your TI-84 is in Polar mode, press the [X,T,θ,n] key (just below the Mode key) to select and insert θ, together with any other characters you require for your expression.

How do I get my TI-84 calculator out of test mode?

Link two TI-84 Plus CE graphing calculators using a unit-to-unit USB cable and then transfer a file by using y 8, SEND RECEIVE. Use TI Connect™ CE Actions > Quit Exam Mode on Connected CE Calculators to quit the exam mode on any connected CE calculator.

How do I get my TI 84 out of test mode?

How do you do parametric mode on a TI Nspire?

Press [MENU]→Graph Type→Parametric to switch to parametric graphing mode. Alternatively, move to the entry line and press [CTRL][MENU]→Parametric.

How do you write a parametric equation?

Example 1:

  1. Find a set of parametric equations for the equation y=x2+5 .
  2. Assign any one of the variable equal to t . (say x = t ).
  3. Then, the given equation can be rewritten as y=t2+5 .
  4. Therefore, a set of parametric equations is x = t and y=t2+5 .

How do you remove a parameter?

  1. One of the easiest ways to eliminate the parameter is to simply solve one of the equations for the parameter (t t , in this case) and substitute that into the other equation.
  2. In this case we can easily solve y y for t t .
  3. Plugging this into the equation for x x gives the following algebraic equation,

How do you write parametric equations?

What mode should my calculator be in?

If there is a degree symbol, you should have your calculator in degree mode. If the input is in degrees (the circle symbol), use degree mode, otherwise use radian mode.

What is test mode on TI 84?

Entering Test Mode (or “Press-to-Test Mode”) on a TI-84 Plus CE is a way of ensuring that students are not able to access any unauthorized programs or files when taking an exam.

How do you put ti84 in test mode?

Entering Test Mode

  1. Turn the calculator OFF.
  2. Press and hold the right arrow, left arrow keys. While holding these keys down, tap the ON key.
  3. You will now see the “RESET OPTIONS” screen.
  4. To confirm and enter test mode, press the Zoom key at the top of the calculator to select the “OK” option.
  5. Press any key to exit.