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28 December 2021 Sergiu Funieru

How to navigate to the next / previous image in IrfanView?

0 Press the Right key to go to the next picture. Press the Left key to go to the previous

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27 December 2021 Sergiu Funieru

How to toggle full screen in IrfanView?

0 Press the Enter key to go full screen. Press the Enter key to exit full screen. 0

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26 December 2021 Sergiu Funieru

What number is missing? : challenge 1 : 4 numbers : 1 number every 2 seconds

0 Here are 4 numbers: 5 3 8 2. You’ll see 3 of them in the next seconds. Can you

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25 December 2021 Sergiu Funieru

How to create a new file in Linux (CentOS 7)

0 To create a new file in Linux (CentOS 7), type touch filename then press Enter.. filename is the name

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24 December 2021 Sergiu Funieru

How to change the directory in Linux (CentOS 7)

0 To change the directory in Linux (CentOS 7), type cd target_folder then press Enter.. Target_folder is the name of

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23 December 2021 Sergiu Funieru

How to clear the screen in Linux (CentOS 7)

0 To clear the screen in Linux (CentOS 7), type clear and press Enter. The clear command will clear whatever

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22 December 2021 Sergiu Funieru

What is a prime number? (definition and examples)

0 A prime number is a whole number which has exactly two factors: 1 and itself. Examples: 7 is prime,

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21 December 2021 Sergiu Funieru

Calculate sum of roots x1+x2+x3 (Viete’s relations) – problem with solution

0 This is problem 3 from Learn Math (problems with solutions) [volume 2].   0

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20 December 2021 Sergiu Funieru

Calculate |3-7i| (module of complex number)

0 This is problem 2 from Learn Math (problems with solutions) [volume 2]. 0

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19 December 2021 Sergiu Funieru

Prove that x^3 + x + tan x is an odd function

0 This is problem 1 from Learn Math (problems with solutions) [volume 2]. 0

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