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Who can tech me the interval notation in mathematics?
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Uses 2 types of brackets to indicate values of x(variable) taken in a set, for example:

(2;6) means x values between 2 and 6, excluding 2 and 6

(2;6] means values between 2 and 6, inclusive of 6

[2;6] means values between 2 and 6, inclusive of 2 and 6

We can use inequality signs also;

2<x< 6 means values greater than 2 but  less than 6= values between 2 and 6, excluding 2 and 6
by Diamond (45,608 points)

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