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MatemáticasMatemáticas5,323 views·Updated Jun 17, 2026·1 page

Ejercicios Resueltos de Logaritmos para 4º ESO

Los logaritmos pueden parecer complicados al principio, pero en realidad...

1
of 1
3. Utilizando la definición, hallar los siguientes logaritmos:
a) log3 9
e) log2√2
i) log4 64
m) log. 256
q) log2 1024
b) log3 81
f) log2√8

Ejercicios de Logaritmos: De la Definición a la Práctica

¿Sabías que los logaritmos son simplemente la pregunta "¿a qué potencia tengo que elevar esta base para obtener este resultado?"? Esta es la clave para resolver cualquier problema de logaritmos que te encuentres.

Cuando veas log₃ 9, pregúntate: "¿3 elevado a qué potencia me da 9?" Como 3² = 9, la respuesta es 2. Es así de directo. Para log₂ √2, necesitas pensar que √2 = 2^(1/2), por lo que la respuesta es 1/2.

Los casos especiales son súper útiles de memorizar: log de 1 siempre es 0 (cualquier número elevado a 0 es 1), y log de la misma base es 1 comolog22=1como log₂ 2 = 1. Cuando aparecen números negativos dentro del logaritmo, como log₃(-9), simplemente no existe en los números reales.

¡Ojo! Si necesitas encontrar la incógnita en una ecuación como log₅ x = -2, conviértelo a forma exponencial: x = 5^(-2) = 1/25.

Para los ejercicios más complejos que combinan propiedades de logaritmos, recuerda las reglas básicas: log(a·b) = log a + log b, loga/ba/b = log a - log b, y logana^n = n·log a. Estas fórmulas te permiten descomponer expresiones como log 162 en términos más simples usando log 2 y log 3.

La práctica constante con estos ejercicios te dará la confianza para reconocer patrones rápidamente. No te agobies si al principio necesitas escribir cada paso - con el tiempo verás las soluciones casi instantáneamente.

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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: Logaritmos

9

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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
MatemáticasMatemáticas5,323 views·Updated Jun 17, 2026·1 page

Ejercicios Resueltos de Logaritmos para 4º ESO

Los logaritmos pueden parecer complicados al principio, pero en realidad son solo otra forma de trabajar con exponentes. Aprender a resolverlos paso a paso te dará las herramientas necesarias para dominar este tema que aparece constantemente en matemáticas.

1
of 1
3. Utilizando la definición, hallar los siguientes logaritmos:
a) log3 9
e) log2√2
i) log4 64
m) log. 256
q) log2 1024
b) log3 81
f) log2√8

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Ejercicios de Logaritmos: De la Definición a la Práctica

¿Sabías que los logaritmos son simplemente la pregunta "¿a qué potencia tengo que elevar esta base para obtener este resultado?"? Esta es la clave para resolver cualquier problema de logaritmos que te encuentres.

Cuando veas log₃ 9, pregúntate: "¿3 elevado a qué potencia me da 9?" Como 3² = 9, la respuesta es 2. Es así de directo. Para log₂ √2, necesitas pensar que √2 = 2^(1/2), por lo que la respuesta es 1/2.

Los casos especiales son súper útiles de memorizar: log de 1 siempre es 0 (cualquier número elevado a 0 es 1), y log de la misma base es 1 comolog22=1como log₂ 2 = 1. Cuando aparecen números negativos dentro del logaritmo, como log₃(-9), simplemente no existe en los números reales.

¡Ojo! Si necesitas encontrar la incógnita en una ecuación como log₅ x = -2, conviértelo a forma exponencial: x = 5^(-2) = 1/25.

Para los ejercicios más complejos que combinan propiedades de logaritmos, recuerda las reglas básicas: log(a·b) = log a + log b, loga/ba/b = log a - log b, y logana^n = n·log a. Estas fórmulas te permiten descomponer expresiones como log 162 en términos más simples usando log 2 y log 3.

La práctica constante con estos ejercicios te dará la confianza para reconocer patrones rápidamente. No te agobies si al principio necesitas escribir cada paso - con el tiempo verás las soluciones casi instantáneamente.

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: Logaritmos

9

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