## Algebra in code and assundry CHAOS

All righty then..... In this lesson we are going to getting down to some hard core numbers. You are given a number of float's and value in them. We are then going to take those Float's and make a program that derives a specific value from those float's making the computer run it through a computation that is provided below.

## Here is the situation

Take a look at the code below: it reads a float value, puts it into a variable named x and prints the value of a variable named y.

Your task is to complete the code in order to evaluate the following expression:

Your task is to complete the code in order to evaluate the following expression:

## Hints

We expect the result to be assigned to y.

Note: we've prepared a variable containing the value of π. Use it.

Be careful! Watch the operators and keep their priorities in mind. Remember that classical algebraic notation likes to omit the multiplication operator – you need to use it explicitly.

Don't hesitate to use as many parentheses as you need. Keep your code clean and readable – surround the operators with spaces. Use additional variables to shorten the expression.

Hint: multiply x by x to get x squared.

Test your code by using the data we've provided – don't be discouraged by any initial failures. Be persistent and inquisitive. Good luck!

We expect the result to be assigned to y.

Note: we've prepared a variable containing the value of π. Use it.

Be careful! Watch the operators and keep their priorities in mind. Remember that classical algebraic notation likes to omit the multiplication operator – you need to use it explicitly.

Don't hesitate to use as many parentheses as you need. Keep your code clean and readable – surround the operators with spaces. Use additional variables to shorten the expression.

Hint: multiply x by x to get x squared.

Test your code by using the data we've provided – don't be discouraged by any initial failures. Be persistent and inquisitive. Good luck!

## The Code

#include <iostream>

using namespace std;

int main(void) {

float pi = 3.14159265359;

float x,y;

cout << "Enter value for x: ";

cin >> x;

// put your code here

cout << "y = " << y;

return 0;

}

using namespace std;

int main(void) {

float pi = 3.14159265359;

float x,y;

cout << "Enter value for x: ";

cin >> x;

// put your code here

cout << "y = " << y;

return 0;

}

## The results that we are after

Example input 1 Example output y = 0.0949234

Example input -1.5 Example output y = 0.0890702

Example input 12.345 Example output y = 0.101057

Example input -1.5 Example output y = 0.0890702

Example input 12.345 Example output y = 0.101057