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For a quotient function \(h(x)=\frac{p(x)}{q(x)}\), which condition is necessary for a value of \(x\) to belong to its domain?

Answer and explanation

Correct answer: Both \(p\) and \(q\) are defined at \(x\), and \(q(x)\ne0\)

The quotient \(\frac{p(x)}{q(x)}\) is defined only when both \(p(x)\) and \(q(x)\) exist and the denominator \(q(x)\) is not zero. Therefore, option A is correct. Having only \(p\) defined is not enough, because \(q\) must also be defined and non-zero. Exam tip: While finding the domain of a quotient function, always exclude values that make the denominator zero.

Related tags

FunctionsQuotient FunctionDomainAlgebraClass 11 MathematicsReal Valued FunctionsTheir Domain And RangeReal Valued Functions Their Domain And RangeRelations And Functions

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