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lina2011 [118]
3 years ago
8

Tinh S(n) = 1+2+3+.....+n

Computers and Technology
1 answer:
vesna_86 [32]3 years ago
8 0

Answer:

-1/12

Explanation:

\sum_{k=0}^{k=n} k = \frac{n(n+1)}{2}\\

look up the derivation by Srinivasa Ramanujan for a formal proof.

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Suppose you are purchasing something online on the Internet. At the website, you get a 10% discount if you are a member. Additio
patriot [66]

Answer:

<em>The function is written in C++</em>

void calc_discount(double amount,bool member)

{

 double discount;

 if(member)

 {

  discount = amount - 0.10 * amount - 0.05 * amount;

 }

 else

 {

  discount = amount - 0.05 * amount;

 }

 cout<<"Discount = "<<discount;

}

Explanation:

<em>I've included the full source code (including the main method) as an attachment where I use comments as explanations</em>

Download cpp
6 0
3 years ago
Macro photographs are what type of photographs? A. Close-up B. Telephoto C. Abstract D. All of the above
scZoUnD [109]

Answer:

A

Explanation:

they are close up. they are not telephoto or abstract

marco can be telephoto, but it is not nessacarily always telephoto. marco is by definition a close up photo

5 0
3 years ago
What is RAD? List an advantage and a disadvantage of using RAD.
ahrayia [7]

Answer:

 RAD is the technique that are used in software development methodology to facilitate the application of the various software development. It is basically provide the high availability of software for he designers. It works on the principle of waterfall model.

Advantages-

  •  It is useful to reduce the overall risks in the system
  •  It is flexible to change
  •  The high level abstraction are easy to transfer

Disadvantage-

  • This process cannot be use in small level projects
  • Not all the applications are suitable with the RAD  
  • It does not work on high technical complexity

7 0
3 years ago
Linguist study_____
-Dominant- [34]
That's B.

Linguist love all kinds of studies of languages culture writing etc.
6 0
3 years ago
What problems might you encounter when using the Web for research?
AfilCa [17]

Answer:

b. d. e.

Explanation:

The web is a vast and endless database of information and has become an invaluable resource for research. That being said it can also bring with it many problems, the main one being unreliable content due to undocumented sources, false testimonies, information with no evidence, etc. The amount of false information on the internet can sometimes make it very time consuming since you have to take the extra step of verifying the information you come across. Despite this, the WEB has information on every topic including current news, and with the wide array of search tools available it is very easy to find what you are looking for.

6 0
3 years ago
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