(Please select 2)

please help no one is helping me on this one

Zigmanuir [339]

Answer:C

Explanation:

4 0

3 years ago

To display “ hello ” message on the screen

Alex787 [66]

Answer:

hello like that

it's in order

4 0

3 years ago

What is the initial condition in this set of code?

marissa [1.9K]

Answer:An initial condition is an extra bit of information about a differential equation that tells you the value of the function at a particular point. Differential equations with initial conditions are commonly called initial value problems.

The video above uses the example

{

d

y

d

x

=

cos

(

x

)

y

(

0

)

=

−

1

to illustrate a simple initial value problem. Solving the differential equation without the initial condition gives you

y

=

sin

(

x

)

+

C

.

Once you get the general solution, you can use the initial value to find a particular solution which satisfies the problem. In this case, plugging in

0

for

x

and

−

1

for

y

gives us

−

1

=

C

, meaning that the particular solution must be

y

=

sin

(

x

)

−

1

.

So the general way to solve initial value problems is: - First, find the general solution while ignoring the initial condition. - Then, use the initial condition to plug in values and find a particular solution.

Two additional things to keep in mind: First, the initial value doesn't necessarily have to just be

y

-values. Higher-order equations might have an initial value for both

y

and

y

′

, for example.

Second, an initial value problem doesn't always have a unique solution. It's possible for an initial value problem to have multiple solutions, or even no solution at all.

Explanation:

5 0

3 years ago

Draw a flow chart that accepts mass and volume as input from the user. The flow chart should compute and display the density of

TiliK225 [7]

Answer:

See attachment for flowchart

Explanation:

The flowchart is represented by the following algorithm:

1. Start

2. Input Mass

3. Input Volume

4 Density = Mass/Volume

5. Print Density

6. Stop

The flowchart is explained by the algorithm above.

It starts by accepting input for Mass

Then it accepts input for Volume

Step 4 of the flowchart/algorithm calculated the Density using the following formula: Density = Mass/Volume

Step 5 prints the calculated Density

The flowchart stops execution afterwards

Note that the flowchart assumes that the user input is of number type (integer, float, double, etc.)

6 0

3 years ago

Write code to take a String input from the user, then print the first and last letters of the string on one line. Sample run: En

Ainat [17]

<h2>Answer:</h2>

//import the Scanner class to allow for user input

import java.util.Scanner;

//Begin class definition

public class FirstAndLast{

//Begin the main method

public static void main(String []args){

//****create an object of the Scanner class.

//Call the object 'input' to receive user's input

//from the console.

Scanner input = new Scanner(System.in);

//****create a prompt to tell the user what to do.

System.out.println("Enter the string");

//****receive the user's input

//And store it in a String variable called 'str'

String str = input.next();

//****get and print the first character.

//substring(0, 1) - means get all the characters starting

//from the lower bound (index 0) up to, but not including the upper

//bound(index 1).

//That technically means the first character.

System.out.print(str.substring(0,1));

//****get and print the last character

//1. str.length() will return the number of character in the string 'str'.

//This is also the length of the string

//2. substring(str.length() - 1) - means get all the characters starting

// from index that is one less than the length of the string to the last

// index (since an upper bound is not specified).

// This technically means the last character.

System.out.print(str.substring(str.length()-1));

} // end of main method

} //end of class definition

<h2>Explanation:</h2>

The code has been written in Java and it contains comments explaining important parts of the code. Kindly go through the comments.

The source code and a sample output have also been attached to this response.

To run this program, copy the code in the source code inside a Java IDE or editor and save it as FirstAndLast.java

Download java

3 0

3 years ago