Math Problem Statement

Convert the following general form to standard form equation of an hyperbola 8x²-5y²+16x-32= 0

Solution

We are tasked with converting the general form equation of a hyperbola:

8x25y2+16x32=08x^2 - 5y^2 + 16x - 32 = 0

to its standard form. Follow these steps:

Step 1: Group the xx and yy terms.

We start by grouping the xx-terms and yy-terms:

(8x2+16x)5y2=32(8x^2 + 16x) - 5y^2 = 32

Step 2: Factor out the coefficient of x2x^2.

We factor out 88 from the xx-terms:

8(x2+2x)5y2=328(x^2 + 2x) - 5y^2 = 32

Step 3: Complete the square for the xx-terms.

To complete the square for x2+2xx^2 + 2x, we take half of 22, which is 11, and square it to get 11. So, we add and subtract 11 inside the parentheses:

8(x2+2x+11)5y2=328(x^2 + 2x + 1 - 1) - 5y^2 = 32

Simplifying:

8((x+1)21)5y2=328((x + 1)^2 - 1) - 5y^2 = 32

Step 4: Distribute the constants.

Now, distribute the 88:

8(x+1)285y2=328(x + 1)^2 - 8 - 5y^2 = 32

Simplify further:

8(x+1)25y2=408(x + 1)^2 - 5y^2 = 40

Step 5: Divide by the constant on the right-hand side.

To convert this into standard form, we divide everything by 4040:

8(x+1)2405y240=1\frac{8(x + 1)^2}{40} - \frac{5y^2}{40} = 1

Simplifying the fractions:

(x+1)25y28=1\frac{(x + 1)^2}{5} - \frac{y^2}{8} = 1

Final Standard Form:

(x+1)25y28=1\frac{(x + 1)^2}{5} - \frac{y^2}{8} = 1

This is the standard form of the given hyperbola.

Would you like more details on any specific step, or do you have any questions?


Here are 5 related questions:

  1. How do you determine the center of a hyperbola from its standard form?
  2. What are the key differences between the equations of ellipses and hyperbolas?
  3. How do you calculate the foci of a hyperbola given its standard form?
  4. Can the orientation of a hyperbola change based on its equation? How?
  5. How is the asymptote of a hyperbola derived from its standard form?

Tip: For hyperbolas, the terms involving squares have opposite signs (one positive, one negative), which distinguishes them from ellipses.

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Math Problem Analysis

Mathematical Concepts

Hyperbola
Conic Sections
Completing the Square

Formulas

Standard form of a hyperbola: (x-h)^2/a^2 - (y-k)^2/b^2 = 1
Completing the square formula: (x^2 + bx) = (x + b/2)^2 - (b/2)^2

Theorems

Conic Sections Theorem
Completing the Square Theorem

Suitable Grade Level

Grades 10-12