Question

Hey a bit of technical help?
I'm using a ti84 graphing calculator and when i graph stuff the lines don't touch/intercept even though they are supposed to? Like there's a noticeable gap between the lines.

Answer 1

graphs i plotted

Answer 2

when i zoom in some parts overlap?!

Answer 3

When I plot these with geogebra, I get the the attached.

Answer 4

on graphing calculator or some other thing? yeah because when i plot them on desmos it works but not on my calculator? it doesn't really make sense

Answer 5

some other thing.

Answer 6

ack :(

Answer 7

thanks anyways

Answer 8

what do you mean touch intercept?

Answer 9

on demos i plot two graphs. The 2 graphs clearly intercept or touch like in the attached photo (which has been zoomed in). But on my calculator there's a noticeable gap between them. the same problem occurs if i try plotting stuff like sqrt(x2+7^2). The line should touch the x axis but it doesn't?

Answer 10

I attempted to recreate the graph. Is this correct?
https://www.desmos.com/calculator/rjxqizf76x

Answer 11

https://www.desmos.com/calculator/wwhanvbour

Answer 12

So you want a continuous graph?

Answer 13

yup. it's perfectly fine on desmos. but not on my calculator. is it some setting?

Answer 14

You need the limits of the endpoints to match
On the left side I got
https://www.desmos.com/calculator/tkhxgatc3a

Answer 15

no sorry to clarify. Everything looks fine on desmos. But not my graphing calculator (ti-84)
here's what the first and 2nd equation look like on my calc

Answer 16

I fixed the graph so that it is continuous, no overlap or sticking out area,
Try to zoom in
https://www.desmos.com/calculator/filstynedc

Answer 17

oops sorry for multiply replys

Answer 18

See if that piece-wise function corrects the gap.

Answer 19

nope :(

Answer 20

How do you graph a piecewise function on a TI-84 calculator. I would like to try to replicate this.

Answer 21

but even for graphs like sqrt(x) or something it doesn't touch the x axis though it should

Answer 22

what do u mean?

Answer 23

I own a TI 84 calculator, I can't graph piecewise functions like on desmos.com

Answer 24

I graphed sqrt(x) and it touches the x axis.

Answer 25

I modified the window. Now I see the gap :-)

Answer 26

Use y = sqrt(x - .04) ,
xmin = -1
xmax = 1
ymin = -0.5
ymax = 0.5
there is a noticeable gap now

Answer 27

That has to do with the limitations of the calculator, how it graphs.

Answer 28

gah sorry the wifi is really slow here

Answer 29

like this. mine doesn't touch the axis? i even reset it

Answer 30

i gtg ill be back later (thanks by the way) :D

Answer 31

but logically it should touch the axis or the other graphs since they intercept/touch

Answer 32

I agree.

Answer 33

i guess my best bet is just to move everything according to what i see unless anyone happens to have any other suggestions?

Answer 34

also thanks guys for helping :D