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Mathematics 10 Online
mathslover (mathslover):

Can |x| ever be negative in any case?

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

|x| can't

mathslover (mathslover):

|i| is negative or positive

OpenStudy (anonymous):

=1 is positive

OpenStudy (anonymous):

Absolutely! My X is negative 50% of the time.

OpenStudy (anonymous):

modulus i is positive

mathslover (mathslover):

\[|\sqrt{-1}| = ?\] 0^2 + 1^2 = 1 ?

OpenStudy (anonymous):

\[\text{magnitude of everything}\ge0\]

mathslover (mathslover):

|(a+ib)^2| = a^2+b^2 ?

mathslover (mathslover):

|a+ib|^2 = a^2+b^2

hartnn (hartnn):

|a+ib| = sqrt(a^2+b^2)

mathslover (mathslover):

Yep.. Thanks @mukushla and @Libniz and @hartnn

OpenStudy (anonymous):

no problem

OpenStudy (anonymous):

no because |x| = √(X² ) so even if you get any number + or - the number will be squared first making it to be + then it will be rooted to give you the number

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