Math Problem Statement

Convert from general form to standard form. General Form: 9x^2 - 4y^2 - 36x + 24y - 36 = 0 Standard Form: (x - E)^2 / G - (y - F)^2 / H = 1

Solution

The equation provided in the general form is:

9x24y236x+24y36=09x^2 - 4y^2 - 36x + 24y - 36 = 0

We need to convert this to the standard form for hyperbolas, which looks like:

(xE)2G(yF)2H=1\frac{(x - E)^2}{G} - \frac{(y - F)^2}{H} = 1

Step 1: Rearranging and Grouping Terms

First, group the xx and yy terms together:

9(x24x)4(y26y)=369(x^2 - 4x) - 4(y^2 - 6y) = 36

Step 2: Completing the Square

We will complete the square for both the xx and yy terms.

For the xx terms:

The expression inside the parentheses is x24xx^2 - 4x. To complete the square, take half of 4-4 (which is 2-2), square it ((2)2=4(-2)^2 = 4), and add and subtract this value:

9(x24x+44)=9((x2)24)9(x^2 - 4x + 4 - 4) = 9((x - 2)^2 - 4)

This simplifies to:

9(x2)2369(x - 2)^2 - 36

For the yy terms:

The expression inside the parentheses is y26yy^2 - 6y. Take half of 6-6 (which is 3-3), square it ((3)2=9(-3)^2 = 9), and add and subtract this value:

4(y26y+99)=4((y3)29)-4(y^2 - 6y + 9 - 9) = -4((y - 3)^2 - 9)

This simplifies to:

4(y3)2+36-4(y - 3)^2 + 36

Step 3: Substitute Back Into the Equation

Substitute these expressions back into the original equation:

9(x2)2364(y3)2+36=369(x - 2)^2 - 36 - 4(y - 3)^2 + 36 = 36

Simplify:

9(x2)24(y3)2=369(x - 2)^2 - 4(y - 3)^2 = 36

Step 4: Divide by 36 to Normalize the Equation

To get the standard form, divide the entire equation by 36:

9(x2)2364(y3)236=3636\frac{9(x - 2)^2}{36} - \frac{4(y - 3)^2}{36} = \frac{36}{36}

This simplifies to:

(x2)24(y3)29=1\frac{(x - 2)^2}{4} - \frac{(y - 3)^2}{9} = 1

Step 5: Identify the Constants

Now that we have the equation in standard form, we can identify the values of EE, FF, GG, and HH:

E=2,F=3,G=4,H=9E = 2, \quad F = 3, \quad G = 4, \quad H = 9

Would you like further details or have any questions?

Here are 5 related questions for further exploration:

  1. How do you complete the square for any quadratic expression?
  2. What does the standard form of a hyperbola represent geometrically?
  3. How can you distinguish between an ellipse and a hyperbola from the general equation?
  4. Why is it necessary to divide the final equation by 36 in this problem?
  5. What are the key characteristics of a hyperbola's asymptotes?

Tip: Completing the square is a key algebraic technique for converting quadratic expressions to vertex form. Always remember to add and subtract the same value inside the parentheses.

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Math Problem Analysis

Mathematical Concepts

Algebra
Conic Sections
Hyperbolas
Completing the Square

Formulas

Standard form of a hyperbola: (x - E)^2 / G - (y - F)^2 / H = 1
Completing the square: (x - b)^2 = x^2 - 2bx + b^2

Theorems

Conic section identification
Completing the square method

Suitable Grade Level

High School (Grades 10-12)