## Todas as tarefas

#### Integral definida (I)

El valor de la intergal $\displaystyle \int_0^1 \frac{y}{y^2+1}dy$ es:

# Definite integral

Training
13

#### Integral definida (B)

Si $f$ es una función real de variable real, continua y $F'(x)=f(x), \forall x \in \mathbb{R}$, entonces $\int_1^3 f(2x)dx$ es:

# Definite integral

Training
13

#### Empresa de transporte

Una empresa de transporte cobra 250 €/día por disponer de una furgoneta con conductor y 1.75 € por cada paquete, excepto el primero, que haya que transportar y descargar. Mi empresa tiene un presupuesto máximo de 300 € diarios para transporte. ¿Cuántos paquetes puedo enviar en un transporte?

# Sequences

Modeling
8

#### Modelling linear functions

Imagine that you want to buy some pens. In the shop near home one pen cost 0,80 euro, online one pen cost 0,60 euro but the shipping fees are 3 euro. How many pens you have to buy in order to spend the same money in each shop?

# Linear functions

Training
8

#### Two straigh lines intersection

Identify the relative positions of this two straigh lines: $y=2x-4$ $y=2x-2$

# Linear functions

Learning
8

#### Point of intersection

Determine a possible point of intersection of the given two lines. $f(x)=0,5x+4,5$ $g(x)=22-3x$

# Linear functions

Training
8