In the figure above, what purpose does the text box identified by the letter "E" serve?
What will be an ideal response?
The value in the X text box is the horizontal location of the selected tab in the tab ruler.
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An nth-degree polynomial is said to be a _________ polynomial if an = 1. ?
Fill in the blank(s) with the appropriate word(s).
In this exercise, you will write a Python version of the infix-to-postfix conversion algorithm. In the next exercise, you will write a Python version of the postfix expression evaluation algorithm. Write a program that converts an ordinary infix arithmetic expression (assume a valid expres- sion is entered) with single-digit integers such as (6 + 2) * 5 - 8 / 4 to a postfix expression. The
postfix version of the preceding infix expression is 6 2 + 5 * 8 4 / - The program should read the expression into a sequence infix, and use modified versions of the stack functions implemented in this chapter to help create the postfix expression in sequence postfix. The algorithm for creating a postfix expression is as follows: 1) Push a left parenthesis '(' onto the stack. 2) Append a right parenthesis ')' to the end of infix. 3) While the stack is not empty, read infix from left to right and do the following: If the current character in infix is a digit, copy it to the next element of postfix. If the current character in infix is a left parenthesis, push it onto the stack. If the current character in infix is an operator, Pop operators (if there are any) at the top of the stack while they have equal or higher precedence than the current operator, and insert the popped operators in postfix. Push the current character in infix onto the stack. If the current character in infix is a right parenthesis Pop operators from the top of the stack and insert them in postfix until a left parenthesis is at the top of the stack. Pop (and discard) the left parenthesis from the stack. The following arithmetic operations are allowed in an expression: + addition - subtraction * multiplication / division ** exponentiation % modulus The stack should be maintained with stack nodes that each contain a data member and a reference to the next stack node. Some of the functional capabilities you may want to provide are: a) Function convertToPostfix that converts the infix expression to postfix notation. b) Function isOperator that determines if c is an operator. c) Function precedence that determines if the precedence of operator1 is less than, equal to or greater than the precedence of operator2. The function returns -1, 0 and 1, respectively. d) Function push that pushes a value onto the stack. e) Function pop that pops a value off the stack. f) Function stackTop that returns the top value of the stack without popping the stack. g) Function isEmpty that determines if the stack is empty. h) Function printStack that prints the stack.
When protecting a database ________
A) use multiple passwords B) split it C) lock all forms D) use a strong password
A(n) ________ is a list of sources referenced in a report, and is listed on a separate page at the end of the report
A) bibliography B) footnote C) citation D) endnote