Primitive concept

Without solving the integral tell if the equality is true (T) or false (F) $\int x\sin(x)dx=x \cos(x)-\sin(x)+C$

# Integration calculus

Training
13

Support for finding out of hypotenuse

Which one of the sides is the hypotenuse?

# Pythagorean theorem

Training
9

The top-right diagonal

Likewise, looking at this spiral of numbers, find the few first items along the diagonal, beginning with 4, 16, 36,...
# Sequences
# Natural numbers

Modeling
5

What is bigger?

Consider the unit squares in the infinite square lattice in the plane on one side, and the integer numbers, as well infinitely many of them, on the other side. What can you say about them?

# Set theory

Modeling
13

The square

Written with this little fancy two up in the air, the square of a number is simply this number multiplied by itself. Compute the squares of the following numbers:

# Powers of integer exponent

Learning
6

The bottom-left diagonal

In the spirale of numbers, complete the sequence of numbers that appear on the bottom-left diagonal, starting from 1, then 9, then...

# Sequences

Training
5