All Tasks
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
Sequence of triangles 2
Determine a term that can be used for each step to determine the number of small triangles
from which each figure is built.
# Terms with variables
Modeling
8