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2. Computer Science

# Question: add the following to the document head set the character...

###### Question details

• Set the character encoding of the file to utf-8.
• Add the following search keywords: math, Euler, pi, and geometry.
• Set the title of the document to Leonhard Euler (1707-1783).
• Link the document to the ms_base.css and ms_layout.cssstyle sheet files.

Add a header, article, aside, nav, and footer element to the document body.

Within the body header, insert an inline image for the ms_logo.png file with the alternate text Math Strings.

Go to the ms_pages.txt file and copy the text of the main article (located in the first section of the file), including the title. Then, go to the ms_euler.html file and paste the copied text into the article element.

Within the article element, make the following markup changes:

• Mark the text Leonhard Euler (1707-1783) as an h1 heading.
• Mark the three paragraphs of the article content using the pelement.
• In the first paragraph, mark the names Leonhard Euler and Jean Bernoulli as strong text. Mark the phrase 800 different books and papers as emphasized text.
• In the second paragraph mark the works Introductio in analysin infinitorum (1748) and Lettres à une princesse d’Allemagne (1768-1772) as citations. Insert the àcharacter using the character reference &agrave;.
• In the third paragraph, mark the mathematical symbols e and πusing the var (variable) element. Insert the π character by replacing [pi] with the &pi;character reference.

Return to the ms_pages.txt and copy the text of the second section containing information about Euler’s Equation, the most beautiful equation in math. Then, go to the ms_euler.html file and paste the copied text into the aside element.

Within the aside element, add the following markup:

• Mark the title The Most Beautiful Equation in Math? as an h1heading.
• Mark the two equations in the pasted text using the codeelement. Mark the three other text groups as paragraphs.
• Throughout the text of the aside element, mark x, I, e, xi, and pi using the var element, replacing [pi] from the pasted text with the character reference &pi;.
• Use the sup element in the following equations to mark xiand πi as superscripts:
• cos(x) + isin(x) = exi
• eπi + 1 = 0
• Mark the text The Mathematical Intelligencer as a citation.

Return to the ms_pages.txt file and copy the text of the third section listing more ways to learn about Euler. Then, go to the ms_euler.htmlfile and paste the copied text into the nav element.

Within the nav element, add the following markup: