absolute value..

[naisha_grace]

a) Is there an x such that [x] = -1? Explain your reasoning.


b) If [x] = 3 what are the possible values for x?


c) What is your best definition of absolute value?

 

[arthur ohlsten]

a)
no absolute power always positive

b)
absolute x is a V shaped curve with vertex at 0
( I use l l for absolute sign
l x l= x x greater than 0
l x l = -x x less than 0
plot absolute x answer x=3 x=-3

l x l =3 replace absolute sign
x=3 x>0 and -x=3 x<0
x=3 and x=-3 answer

c) check internet for definition
Arthur