# graphs absolute

• Dec 7th 2006, 06:21 PM
Mr_Green
graphs absolute
Say you have f(x) = x

so it looks like this /

if you do f(|x|)... will it make it look like V or <

THANKS
• Dec 7th 2006, 06:24 PM
AfterShock
Quote:

Originally Posted by Mr_Green
Say you have f(x) = x

so it looks like this /

if you do f(|x|)... will it make it look like V or <

THANKS

V.
• Dec 7th 2006, 06:40 PM
ThePerfectHacker
IT cannot look like <
Because otherwise it is not a function (vertical line test).
• Dec 7th 2006, 07:13 PM
Ruichan
Just reflect all the -xs about the x axis and you'll get V
• Dec 8th 2006, 04:36 AM
topsquark
Quote:

Originally Posted by Mr_Green
Say you have f(x) = x

so it looks like this /

if you do f(|x|)... will it make it look like V or <

THANKS

Here's the graph.

-Dan
• Dec 8th 2006, 05:15 AM
Soroban
Hello, Mr_Green!

Quote:

Say you have \$\displaystyle f(x) = x\$

so it looks like this: /

If you do \$\displaystyle f(|x|)\$ . . . will it make it look like \$\displaystyle \lor\$ or \$\displaystyle <\$ ?

Since we have \$\displaystyle f(x) = |x|\$, the graph is symmetric to the y-axis: .\$\displaystyle \lor\$
Baby-talk: "Anything that happens on the right will also happen on the left"