**TI-84 Plus CE: Time Plot of Two Parametric Equations**

**Introduction**

The program TIMEPLOT animates two parametric plots.

**TI-84 Plus Program TIMEPLOT**

(237 bytes)

"EWS 2019-04-22"

Param

PlotsOff

FnOff

Input "T START:",A

Input "T STOP:", B

Input "T STEP:", S

int((B-A)/S) → N

A → T: {X1T} → L1 : {Y1T} → L2

{X2T} → L3: {Y2T} → L4

For(I,2,N)

A + S*(I-1) → T

augment(L1, {X1T}) → L1

augment(L2, {Y1T}) → L2

augment(L3, {X2T}) → L3

augment(L4, {Y2T}) → L4

Plot1(Scatter, L1, L2, □, BLUE)

Plot2(Scatter, L3, L4, □, GREEN)

DispGraph

Wait 1

End

**Example**

X1T = 2 SIN T

Y1T = 3 SIN T

X2T = SIN (T^2/4)

Y2T = 1/2 * COS(T^2/8)

T START: 0

T STOP: 4 * π

T STEP: π / 24

Eddie

All original content copyright, © 2011-2019. Edward Shore. Unauthorized use and/or unauthorized distribution for commercial purposes without express and written permission from the author is strictly prohibited. This blog entry may be distributed for noncommercial purposes, provided that full credit is given to the author.

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