Question

how do i put these graphs in a TI-83 Plus Calculator
a. |f(x)|
b. f(|x|)
c. f(2x)
d. 2f(x)
e. -f(x)
g. f(-x)

Answer 1

okay well what is f(x)

Answer 2

1. f(x) =2x+3
2. f(x)=x^2 -5x -3
3.f(x) =2sin(3x)
is that what you mean by what is f(x)?

Answer 3

THis is an overall reference to grahing on that calculator:
http://www.prenhall.com/divisions/esm/app/graphing/ti83/Graphing/

Answer 4

Taking your second example \[f(x) = x^2-5x -3\].
Keep in mind that the TI-83 doesn't have the || symbol (at least on the version in my emulator) so you need to use the abs( option under the MATH menu.

a. take the absolute value of the whole function
\[|f(x)| = abs(x^2-5x-3)\]
b. Just take the absolute value of the x's
\[f(|x|) = (abs(x))^2-5abs(x)-3\]
c. Multiply the x's by 2
\[f(2x)=(2x)^2-5(2x)-3\]
d. Multiply the whole function by 2
\[2f(x)=2(x^2-5x-3)\]
e. Multiply the whole function by -1
\[-f(x)=-(x^2-5x-3)\]
Multiply just the x's by -1
\[f(-x)=(-x)^2-5(-x)-3\]

Answer 5

i tried putting the first one but it says Error:window range

Answer 6

what's the range for the graph showing? you probably have to adjust the x and y values

Answer 7

If you just do a standard -10 to 10 window you should see it

Answer 8

is it this ?
Xmin=1
Xmax= 2.21875
Xscl= 1
Ymin= .49276365
Ymax= 5.49276365
Yscl=1
this is my first time using a graphing calculator so i don't really know how to use it

Answer 9

your window is too small. Hit the ZOOM button then hit 6 so it will change to the standard window size

Answer 10

i got it thank you

Answer 11

ok