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ÁlgebraÁlgebra225 views·Updated Jun 27, 2026·2 pages

Funciones Cuadráticas: Fórmulas y Ejemplos

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JennSilv@ima.jenngibre

Las funciones cuadráticas son ecuaciones que forman parábolas cuando las...

1
of 2
# Funciones cuadraticas

1- Marzo 24

variable dependiente

$f(x)=ax²+bx+c$

$y = a x + b$ constante

Pendiente variable independiente

vert

Fundamentos de las Funciones Cuadráticas

Las funciones cuadráticas tienen la forma general f(x) = ax² + bx + c, donde "a", "b" y "c" son constantes y "a" no puede ser cero. La diferencia clave con las funciones lineales es que aquí tenemos x², lo que crea esa forma curva característica llamada parábola.

El vértice es el punto más alto o más bajo de la parábola, y puedes encontrar su coordenada x usando la fórmula x = -b/(2a). Este punto es súper importante porque te dice dónde la función alcanza su valor máximo o mínimo.

Para resolver problemas con funciones cuadráticas, generalmente necesitas hacer tres cosas: encontrar el valor de "y" cuando x = 0 (la intersección con el eje y), calcular el punto vértice, y hallar los valores de x cuando y = 0 (las raíces o intersecciones con el eje x).

Tip clave: Cuando a > 0, la parábola abre hacia arriba; cuando a < 0, abre hacia abajo.

2
of 2
# Funciones cuadraticas

1- Marzo 24

variable dependiente

$f(x)=ax²+bx+c$

$y = a x + b$ constante

Pendiente variable independiente

vert

Resolución de Ejercicios Prácticos

Veamos cómo resolver f(x) = x² - x - 6 paso a paso. Primero, cuando x = 0, simplemente sustituyes: f(0) = 0² - 0 - 6 = -6. Así encuentras que la parábola cruza el eje y en el punto (0, -6).

Para el vértice, usas x = -b/(2a) = -(-1)/(2×1) = 1/2 = 0.5. Luego sustituyes este valor: f(0.5) = (0.5)² - 0.5 - 6 = -6.25. El vértice está en (0.5, -6.25).

Para las raíces cuandoy=0cuando y = 0, puedes factorizar x² - x - 6 = 0 como x3x - 3x+2x + 2 = 0. Esto te da x = 3 y x = -2. También puedes usar la fórmula cuadrática x = b±(b24ac)-b ± √(b² - 4ac)/(2a) para casos más complicados.

Recuerda: Siempre verifica tus respuestas sustituyendo los valores en la ecuación original.

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Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

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You can download the app in the Google Play Store and in the Apple App Store.

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Most popular content: Quadratic Equation

5

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Most popular content

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user

ÁlgebraÁlgebra225 views·Updated Jun 27, 2026·2 pages

Funciones Cuadráticas: Fórmulas y Ejemplos

user profile picture
JennSilv@ima.jenngibre

Las funciones cuadráticas son ecuaciones que forman parábolas cuando las graficas, y son súper importantes para entender muchos fenómenos del mundo real. Vamos a ver cómo resolver y graficar estas funciones paso a paso, usando ejemplos prácticos que te ayudarán...

1
of 2
# Funciones cuadraticas

1- Marzo 24

variable dependiente

$f(x)=ax²+bx+c$

$y = a x + b$ constante

Pendiente variable independiente

vert

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

Fundamentos de las Funciones Cuadráticas

Las funciones cuadráticas tienen la forma general f(x) = ax² + bx + c, donde "a", "b" y "c" son constantes y "a" no puede ser cero. La diferencia clave con las funciones lineales es que aquí tenemos x², lo que crea esa forma curva característica llamada parábola.

El vértice es el punto más alto o más bajo de la parábola, y puedes encontrar su coordenada x usando la fórmula x = -b/(2a). Este punto es súper importante porque te dice dónde la función alcanza su valor máximo o mínimo.

Para resolver problemas con funciones cuadráticas, generalmente necesitas hacer tres cosas: encontrar el valor de "y" cuando x = 0 (la intersección con el eje y), calcular el punto vértice, y hallar los valores de x cuando y = 0 (las raíces o intersecciones con el eje x).

Tip clave: Cuando a > 0, la parábola abre hacia arriba; cuando a < 0, abre hacia abajo.

2
of 2
# Funciones cuadraticas

1- Marzo 24

variable dependiente

$f(x)=ax²+bx+c$

$y = a x + b$ constante

Pendiente variable independiente

vert

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

Resolución de Ejercicios Prácticos

Veamos cómo resolver f(x) = x² - x - 6 paso a paso. Primero, cuando x = 0, simplemente sustituyes: f(0) = 0² - 0 - 6 = -6. Así encuentras que la parábola cruza el eje y en el punto (0, -6).

Para el vértice, usas x = -b/(2a) = -(-1)/(2×1) = 1/2 = 0.5. Luego sustituyes este valor: f(0.5) = (0.5)² - 0.5 - 6 = -6.25. El vértice está en (0.5, -6.25).

Para las raíces cuandoy=0cuando y = 0, puedes factorizar x² - x - 6 = 0 como x3x - 3x+2x + 2 = 0. Esto te da x = 3 y x = -2. También puedes usar la fórmula cuadrática x = b±(b24ac)-b ± √(b² - 4ac)/(2a) para casos más complicados.

Recuerda: Siempre verifica tus respuestas sustituyendo los valores en la ecuación original.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content: Quadratic Equation

5

Most popular content in Matemáticas

9

Most popular content

9

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5App Store
4.7/5Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan SiOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha KlichAndroid user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

AnnaiOS user