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单词 Rational algebraic fraction
释义

Rational algebraic fraction

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Algebraic fraction

In algebra, an algebraic fraction is a fraction whose numerator and denominator are algebraic expressions. Two examples of algebraic fractions are \frac{3x}{x^2+2x-3} and \frac{\sqrt{x+2}}{x^2-3}. Algebraic fractions are subject to the same laws as arithmetic fractions.

A rational fraction is an algebraic fraction whose numerator and denominator are both polynomials. Thus \frac{3x}{x^2+2x-3} is a rational fraction, but not \frac{\sqrt{x+2}}{x^2-3}, because the numerator contains a square root function.

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