#### cube tower 2

Set up a term for the tower that can be used to determine the number of visible side faces as a function of the number of cubes.

# Terms with variables

Modeling
7

#### Which unknown is longer?

The total length of each track you see in the image is 30m. Which of the variables x or y is longer? Fill in the blanks with the words longer or shorter and your calculated values.

# Linear functions

Reasoning
9

#### Chain rule arcsin

Let $f$ be a continuous function on $\mathbb{R}$ and $g$ the function $g(x)=\pi-\arcsin(3+2x)$. Knowing that $f\left(\pi\right)=0$ and $f'\left(\pi\right)=-1$, find the value of the derivative $\left(f\left(g\left(-\frac{3}{2}\right)\right)\right)'$.

# Functions of one variable

Training
13

#### Chain rule arcsin

Let $y=y(x)=\arcsin(2-3x)$ and $x=x(t)=e^{3t^2}$. Use the chain rule formula to express the derivative $\left.\frac{dy}{dt}\right|_{t=0}$.

# Functions of one variable

Training
13

#### terms square 1

The depicted sequence of matchstick figures is continued. Indicate the number of matchsticks at the 4th step.

# Terms with variables

Modeling
7

#### Perimeter triangle

In an isosceles triangle, the base is 5 cm longer than each leg. Set up a term that can be used to determine the perimeter of the figure.

# Terms with variables

Modeling
7