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Mathematics 18 Online
OpenStudy (anonymous):

find absolute value|-12|

OpenStudy (anonymous):

12

OpenStudy (nenadmatematika):

12

OpenStudy (saifoo.khan):

\[\Huge |-a| = a\]

OpenStudy (anonymous):

12, becase the lines make anything negative positive

myininaya (myininaya):

saifoo what you said is true if a>0 if a<0 then|-a|=-a you could say |-a|=a when a>0 which it is here a=12 |-12|=12

OpenStudy (saifoo.khan):

Woah! Myininya, can u elaborate please?

OpenStudy (saifoo.khan):

This is new for me! :D

myininaya (myininaya):

if a<0, then |-a|=-a (if a is negative and we want a positive output we need a negative in front of a so our output is positive) if a>0, then |-a|=a

myininaya (myininaya):

for example if a=-12=> |-a|=-(-12) using the formula I just wrote

OpenStudy (anonymous):

Myin I disagree with you. If a is a negative number (or any number) saifoo's equation is correct.

OpenStudy (saifoo.khan):

confused.. :(

myininaya (myininaya):

|dw:1329345266674:dw| |x| is a piecewise function

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