Knowee
Questions
Features
Study Tools

Find the maximum possible value of the product xy, where x is given by the solution to the equation | x + 3 | = 4 and y is given by y = 7 – | x – 2 |.

Question

Find the maximum possible value of the product xy, where x is given by the solution to the equation | x + 3 | = 4 and y is given by y = 7 – | x – 2 |.

🧐 Not the exact question you are looking for?Go ask a question

Solution

To find the maximum possible value of the product xy xy , we need to solve for x x and y y based on the given equations and then determine the product xy xy .

First, solve the equation x+3=4 | x + 3 | = 4 :

  1. x+3=4 x + 3 = 4 x=43=1 x = 4 - 3 = 1

  2. x+3=4 x + 3 = -4 x=43=7 x = -4 - 3 = -7

So, the possible values for x x are x=1 x = 1 and x=7 x = -7 .

Next, find the corresponding values of y y using the equation y=7x2 y = 7 - | x - 2 | :

  1. For x=1 x = 1 : y=712=71=71=6 y = 7 - | 1 - 2 | = 7 - | -1 | = 7 - 1 = 6

  2. For x=7 x = -7 : y=772=79=79=2 y = 7 - | -7 - 2 | = 7 - | -9 | = 7 - 9 = -2

Now, calculate the product xy xy for each pair (x,y)(x, y):

  1. For x=1 x = 1 and y=6 y = 6 : xy=16=6 xy = 1 \cdot 6 = 6

  2. For x=7 x = -7 and y=2 y = -2 : xy=72=14 xy = -7 \cdot -2 = 14

Therefore, the maximum possible value of the product xy xy is 14 14 .

This problem has been solved

Similar Questions

If y = x3 - x2 - 7x - 3, what is the maximum value of y on the interval [-3, 3] ?

Use the method of Lagrange Multipliers to optimise the function f (x, y) = x2 + y2 − 3xy subject to the constraint x − 4y = 7. Find the location of the optimal point, the value of λ and the value of f (x, y) at this point. Note: In the quiz, enter non-integer numerical values as decimals to at least 3 decimal places; i.e. you will need to fill in some boxes similar to the following: The optimal point is located at x = and y = with λ = and f (x, y) =

The system of equations 2x + 3y = 8 and (A + 7)x + (B2 – 22)y = 24B, where A and B are real numbers, has infinitely many solutions for x and y. What is the sum of the maximum and minimum values of AB?

Of two numbers ,3 times the larger one is greater than 4 times the smaller one by 7.Also, the sum of numbers is larger than 6 times their difference by 4.Find the largest number.

Find the value of y which satisfies 4y + 5 > 25? y > 5 y < - 3 y > - 5 y < 7 None of thes

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.