The mathematical concepts that Leonhard Euler's legacy included are as follows:
The formalization of function notation
The notation for the imaginary unit
The notation for the base of the natural logarithm
Remember, that all of Euler's legacy included the introduction of the concept of functions as well as the proper way to write them within a mathematical formula by using the notation f(x). Before his formalization of the notation, functional relationships were referred to by just one letter, F, or with Greek letters omitting the parentheses, φx. In fact, Euler spelled out much of the mathematical notation we use today, including the letter "e" for the base of the natural logarithm (also known as Euler's number), the letter "I" to denote the imaginary unit, and the Greek letter "Σ" for summations. He also encouraged the use of the Greek letter "π" to signify the ratio of a circle's circumference to its diameter.
Metaphors to compare equality to things the audience knows
Explanation:
When an object is compared to an action or a phase in which it is not applicable then it is called as a metaphor. In the except President Kennedy mostly conveys his points by using metaphors to compare equality to the audience so that it can be easily relatable.
Americans in the early period suffered from the inequalities done to them. Most often the black Americans were subjected to this type of activities.
I'd say D, because that seems like a good writers strategy. To give information centered around the narrative and theme. Otherwise, A.
Print sources include any material that is found in print: a traditional book, magazine, or newspaper. In these times of multiple electronic sources, it can be confusing to determine which sources are identified as print. Even if you find a source in an online database, if there is a print (paper) copy somewhere, then you can list this source as print.
