maths.free › Precalculus › Rational functions
Rational functions
Asymptotes, holes and domain — where a fraction of polynomials blows up.
A rational function is one polynomial over another. Where the denominator is zero the function has a vertical asymptote (or a hole, if the factor cancels); the degrees decide the horizontal or slant asymptote. Cancelling common factors first is what separates the two cases.
වැඩ කළ උදාහරණය: y = 1/(x^2 - 1)
පියවරෙන් පියවර
- \frac{1}{x^{2} - 1}
An expression in x. Here is what it does.
- \frac{1}{\left(x - 1\right) \left(x + 1\right)}
Factored form.
- \frac{d}{dx} = - \frac{2 x}{\left(x^{2} - 1\right)^{2}}
Derivative (slope).
උත්තරය හෙළි කරන්න
\frac{1}{x^{2} - 1}
ඔයාගේම උත්සහ කරන්න
තවත් Precalculus
Complex numbersPolynomial functionsSequences and seriesThe binomial theoremConic sectionsVectors