Answer:
Hello!
The statement is "if x and y are odd integers, then x + y is even"
and we want to prove it by contradiction.
Suppose that we have x and y odd numbers, and suppose that his addition is odd.
We know that an odd number can be writen as (2n +1) (and a even number can be written as 2n) where n is an integer number; then:
x = (2k + 1) and y = (2m + 1)
and x + y = j, where j is also a odd number, then j = (2h + 1)
then:
2k + 1 + 2m + 1 = 2h + 1
2(k + m) + 2 = 2h + 1
2(k + m) +1 = 2h
if k and m are integers, then k + m is also an integer, suppose that k + m = g
then 2g + 1 = 2h
this says that in odd number is equal to an even number, then we have a contradiction, and the addition of two odd numbers cant be an odd number.
Answer:Maybe that is inaropriate
Explanation:
Try rephrasing that
Answer:
Algorithms.
Explanation:
Computer system is an electronic machine that receives input data, processes or executes these data and outputs the results. It comprises of two parts, the hardware and software components.
The computer receives data created by a process and inputted by individuals. The software components are the operating system and the application softwares running in the operating system. The application software follows a well defined stages of task to execute a task. This is called algorithm.
The application uses the algorithm to execute the task on the input data to give the required result.
Answer:
The code to this question can be given as:
Code:
//define code.
//conditional statements.
if (Character.isLetter(passCode.charAt(0))) //if block
{
System.out.println("Alphabetic at 0"); //print message.
}
if (Character.isLetter(passCode.charAt(1))) //if block
{
System.out.println("Alphabetic at 1"); //print message.
}
Explanation:
In this code, we define conditional statement and we use two if blocks. In both if blocks we use isLetter() function and charAt() function. The isLetter() function checks the inserted value is letter or not inside this function we use charAt() function that checks inserted value index 1 and 2 is the character or not.
- In first if block we pass the user input value and check the condition that if the inserted value is a character and its index is 0 so, it will print Alphabetic at 0.
- In second if block we pass the user input value and check the condition that if the inserted value is a character and its index is 1 so, it will print Alphabetic at 1.
Answer:
The correct answer to the following question will be "STDEV".
Explanation:
- The method Excel STDEV generates the standard data variance describing a variable or to estimate or measure the standard deviation in a test, this method will be used.
- To find a population's standard deviation will be using the STDEV. P function in and later on throughout Excel. Either use STDEVA or STDEVPA unless you include rational or document values in the computation.
The manufacturer must, therefore, use the STDEV function, because of this.
