1 Some math
Based on the graph of the function f (x) = |x2− 5x + 6| we can determine the number of solutions of the equation f (x) = m, depending on the value of the parameter m.
It is known that lim
t→0
sin t
t = 1, so lim
x→π2
sin x −π2 x − π2 = 1.
A function ϕ : R → R is given by the formula
ϕ(x) = 3x2− 1+x2 4
8x6+ 1 sin3x + 1 8 . The numbers of the sequence (an) are of the form
an= 5n3+ 3n2− n 4n2+ 2n − 1
14
, n = 1, 2, . . . .
It is known that the number series
∞
P
n=1 1
n is divergent and the series
∞
P
n=1 1
(2n−1)2 is convergent and
∞
X
n=1
1
(2n − 1)2 = π2 8 .
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2 Everyday matters
Here is the shopping list to make today:
1. baked products (a) bread;
(b) 5 rolls;
2. dairy products (a) milk;
(b) butter;
(c) yogurts;
3. printer paper;
4. pens (a) blue;
(b) black.
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3 About me
My hobby:
• listening to music - performer X;
- performer Y;
- performer Z;
• sport
- jogging;
- cycling.
My favorite friends:
♥ Mag
♥ Zuza
♥ Aga
♥ Karol
♥ Robert
♥ Pablo
Contents
1 Some math 1
2 Everyday matters 2
3 About me 3
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