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Mathematics 18 Online
OpenStudy (anonymous):

absolute value of x=?,if x is negative

OpenStudy (owlfred):

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OpenStudy (anonymous):

|x|=-x ix x is negative

OpenStudy (anonymous):

if*

OpenStudy (anonymous):

\[The\ absolute\ value\ of \ negative\ is\ positive\]

OpenStudy (anonymous):

so in this case it would be |x|=-? for negative x

OpenStudy (anonymous):

using this definition, abs of negative becomes positive

OpenStudy (anonymous):

|x|=-x

OpenStudy (anonymous):

let x=-3 |-3|=-(-3)=+3

OpenStudy (anonymous):

so it is positive?

OpenStudy (anonymous):

absolute makes a negative no positive

OpenStudy (anonymous):

\[Yes\ it\ is\]

OpenStudy (anonymous):

\[The\ absolute\ value \ of \ any \ positive\ or\ negative\ number \ is \ the\ same\ positive\]\[number\] \[itself\]

OpenStudy (anonymous):

-x

OpenStudy (anonymous):

are u sure krish?other people are saying it is -x

OpenStudy (anonymous):

as x is by definition of the question negative the minus sign would make it positive, so in this case -x is a positive number ;)

OpenStudy (anonymous):

but an absolute value can never be negative

OpenStudy (anonymous):

right, actually u seem to be a bit confused somewhere the definition of absolute is |x|= x, if x is +ive |x|=-x, if x is -ive

OpenStudy (anonymous):

i already posted an exp, y abs of a -ive no becomes +ive

OpenStudy (anonymous):

got it?

OpenStudy (anonymous):

let x be 3.so if it is negative it would be -3.therefore absolute value of -3 is 3

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