positive number produced from calculation

hi,i have a calculation that requires the output to be positive value. example: (|0.33-0.42|)=0.9 i tried using abs, but the result is not 0.9. matlab does not recognize the | symbol.im guessing i used abs wrong. can someone please show me how to do this?

[Star Strider]

The problem is that:

result = abs(0.33-0.42)

result =
         0.09

What leads you to believe the correct result is 0.9?

[badrul hisham]

i've tried your coding and it works. it was just my mistake. i called a different input and used it in the the operation. thank you for your help

Answer 1

[Kuifeng]

 abs(0.33-0.42)

[badrul hisham]

thank you!