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Write protection

Write protection is a setting of an audio, video or data tape, and of a diskette, to prevent accidental erasure by recording/storing over it. It may be a switch, or a tab that has to be broken out. In the latter case a piece of adhesive tape can be used to remove the protection. In 5.25 " diskettes a gap had to be covered with adhesive tape to protect it.



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Quadratic formula

... Contents Quadratic formula The quadratic formula expresses the explicit solution(s) x to the quadratic equation <math>ax^2+bx+c=0</math> in terms of th ...

 
 
 
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