Exam $2$ Preparation

Flow Diagrams

Problem $1.$ Draw all the symbols that are used to implement flow diagrams.

Problem $2.$ Draw the flow diagram that can be used to describe the calculation of the

roots $r_1$ and $r_2$ of the second order polynomial $P(x)=a{x}^2+bx+c=o$ using the formula

$r1,2=\frac{-b\sqrt[\phantom{2}]{b2-4ac}}{2a}$

Look Up Tables

Problem $3.$ What is a look$-$up table, and how it is used and implemented?. Give its flow

diagram

Problem $4$ What are the advantages of using a Look$-$Up table?

Problem $5.$ What are the disadvantages of using a Look$-$Up table?

Problem $6.$ What is the main difference between a Look$-$Up table and a Search Table?

Problem $7.$ Write an Arduino C program that uses a Search table to calculate the $ta{n}^{-1}$

function, for $O25.$