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OpenStudy (anonymous):
Why is it important to find the restrictions on a variable?
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OpenStudy (anonymous):
it is sometime important in case of a denominator goes to zero so that it should be avoided to gets undefined like 4/(x-3) xis not equl to 3 also in case of logrithm it should be avoided that there should be no zero because logrithm of zero is going towords infinity
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