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The equation of the hyperbola is given as (x+2)(y+3) = t.
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Here are the solutions to Question 1:
1.1.1
The equation of the hyperbola is given as .
The vertical asymptote is found by setting the factor involving to zero:
The horizontal asymptote is found by setting the factor involving to zero:
The equations of the asymptotes of are .
1.1.2
1.1.2.1 Determine the value of .
We are given that . This means when , .
Substitute these values into the equation :
1.1.2.2 Determine the values of and .
The function is a parabola. Its axis of symmetry is .
The problem states that one of the asymptotes of is an axis of symmetry for . From 1.1.1, the asymptotes of are and . Since the axis of symmetry for a parabola is a vertical line, it must be .
Therefore, .
The turning point of the parabola is . Since , the x-coordinate of the turning point is . From the graph, the turning point of is at .
Thus, .
The values are .
1.2
Write in the form .
From 1.1.2.1, we found . So the equation for is .
Divide by :
Subtract 3 from both sides:
So, in the required form is .
1.3
If is the line of symmetry to , determine the coordinates of the points of intersection and .
To find the points of intersection, we set the equations for and equal to each other.
Equation for :
Equation for : (using from 1.1.2.1)
Substitute into the equation for :
Take the square root of both sides:
Case 1:
Substitute into :
Point 1:
Case 2:
Substitute into :
Point 2:
The coordinates of the points of intersection are .
1.4
If . Determine the values of if its roots are:
We consider the quadratic equation .
The discriminant is . Here, , , .
1.4.1 non-real roots
For non-real roots, the discriminant must be less than zero ().
1.4.2 negative and unequal roots
For unequal roots, the discriminant must be greater than zero ().
For negative roots, two conditions must be met:
- The sum of the roots () must be negative. This condition is satisfied as .
- The product of the roots () must be positive.
Combining the conditions and , we get:
1.5
1.5.1 domain of
The function is a hyperbola with a vertical asymptote at . The function is undefined at this value.
The domain of is .
1.5.2 range of
The function is a parabola. From 1.1.2.2, we found and .
So, .
This is a parabola that opens upwards (since the coefficient of is positive). Its minimum value occurs at the turning point .
The minimum y-value is .
The range of is .
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