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The equation of the hyperbola is given as (x+2)(y+3) = t.

Mathematics

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Here are the solutions to Question 1:

1.1.1
The equation of the hyperbola is given as (x+2)(y+3)=t(x+2)(y+3) = t.
The vertical asymptote is found by setting the factor involving xx to zero:

x+2=0  ⟹  x=−2x+2 = 0 \implies x = -2

The horizontal asymptote is found by setting the factor involving yy to zero:

y+3=0  ⟹  y=−3y+3 = 0 \implies y = -3

The equations of the asymptotes of gg are x=−2 and y=−3\boxed{x = -2 \text{ and } y = -3}.

1.1.2
1.1.2.1 Determine the value of tt.
We are given that g(0)=−52g(0) = -\frac{5}{2}. This means when x=0x=0, y=−52y=-\frac{5}{2}.
Substitute these values into the equation (x+2)(y+3)=t(x+2)(y+3) = t:

(0+2)(−52+3)=t(0+2)\left(-\frac{5}{2}+3\right) = t (2)(−52+62)=t(2)\left(-\frac{5}{2}+\frac{6}{2}\right) = t (2)(12)=t(2)\left(\frac{1}{2}\right) = t t=1t = \boxed{1}

1.1.2.2 Determine the values of pp and qq.
The function f(x)=(x+p)2+qf(x) = (x+p)^2 + q is a parabola. Its axis of symmetry is x=−px = -p.
The problem states that one of the asymptotes of gg is an axis of symmetry for ff. From 1.1.1, the asymptotes of gg are x=−2x=-2 and y=−3y=-3. Since the axis of symmetry for a parabola is a vertical line, it must be x=−2x=-2.
Therefore, −p=−2  ⟹  p=2-p = -2 \implies p = 2.
The turning point of the parabola ff is (−p,q)(-p, q). Since p=2p=2, the x-coordinate of the turning point is −2-2. From the graph, the turning point of ff is at (−2,−1)(-2, -1).
Thus, q=−1q = -1.
The values are p=2 and q=−1\boxed{p = 2 \text{ and } q = -1}.

1.2
Write gg in the form y=ax+p+qy = \frac{a}{x+p} + q.
From 1.1.2.1, we found t=1t=1. So the equation for gg is (x+2)(y+3)=1(x+2)(y+3) = 1.
Divide by (x+2)(x+2):

y+3=1x+2y+3 = \frac{1}{x+2}

Subtract 3 from both sides:

y=1x+2−3y = \frac{1}{x+2} - 3

So, gg in the required form is y=1x+2−3\boxed{y = \frac{1}{x+2} - 3}.

1.3
If h(x)=x−1h(x) = x-1 is the line of symmetry to gg, determine the coordinates of the points of intersection hh and gg.
To find the points of intersection, we set the equations for h(x)h(x) and g(x)g(x) equal to each other.
Equation for hh: y=x−1y = x-1
Equation for gg: (x+2)(y+3)=1(x+2)(y+3) = 1 (using t=1t=1 from 1.1.2.1)
Substitute y=x−1y = x-1 into the equation for gg:

(x+2)((x−1)+3)=1(x+2)((x-1)+3) = 1 (x+2)(x+2)=1(x+2)(x+2) = 1 (x+2)2=1(x+2)^2 = 1

Take the square root of both sides:

x+2=±1x+2 = \pm \sqrt{1} x+2=±1x+2 = \pm 1

Case 1: x+2=1x+2 = 1

x=1−2x = 1-2 x=−1x = -1

Substitute x=−1x=-1 into y=x−1y=x-1:

y=−1−1y = -1-1 y=−2y = -2

Point 1: (−1,−2)(-1, -2)

Case 2: x+2=−1x+2 = -1

x=−1−2x = -1-2 x=−3x = -3

Substitute x=−3x=-3 into y=x−1y=x-1:

y=−3−1y = -3-1 y=−4y = -4

Point 2: (−3,−4)(-3, -4)
The coordinates of the points of intersection are (−1,−2) and (−3,−4)\boxed{(-1, -2) \text{ and } (-3, -4)}.

1.4
If k=x2+4x+3k = x^2+4x+3. Determine the values of kk if its roots are:
We consider the quadratic equation x2+4x+3−k=0x^2+4x+3-k=0.
The discriminant is Δ=B2−4AC\Delta = B^2 - 4AC. Here, A=1A=1, B=4B=4, C=3−kC=3-k.

Δ=(4)2−4(1)(3−k)\Delta = (4)^2 - 4(1)(3-k) Δ=16−12+4k\Delta = 16 - 12 + 4k Δ=4+4k\Delta = 4 + 4k

1.4.1 non-real roots
For non-real roots, the discriminant must be less than zero (Δ<0\Delta < 0).

4+4k<04 + 4k < 0 4k<−44k < -4 k<−1k < \boxed{-1}

1.4.2 negative and unequal roots
For unequal roots, the discriminant must be greater than zero (Δ>0\Delta > 0).

4+4k>04 + 4k > 0 4k>−44k > -4 k>−1k > -1

For negative roots, two conditions must be met:

  1. The sum of the roots (x1+x2=−BAx_1+x_2 = -\frac{B}{A}) must be negative. x1+x2=−41=−4x_1+x_2 = -\frac{4}{1} = -4 This condition is satisfied as −4<0-4 < 0.
  2. The product of the roots (x1x2=CAx_1x_2 = \frac{C}{A}) must be positive. x1x2=3−k1=3−kx_1x_2 = \frac{3-k}{1} = 3-k 3−k>03-k > 0 −k>−3-k > -3 k<3k < 3

Combining the conditions k>−1k > -1 and k<3k < 3, we get:

−1<k<3\boxed{-1 < k < 3}

1.5
1.5.1 domain of gg
The function g(x)g(x) is a hyperbola with a vertical asymptote at x=−2x=-2. The function is undefined at this value.
The domain of gg is x∈R,x≠−2\boxed{x \in \mathbb{R}, x \neq -2}.

1.5.2 range of ff
The function f(x)=(x+p)2+qf(x) = (x+p)^2 + q is a parabola. From 1.1.2.2, we found p=2p=2 and q=−1q=-1.
So, f(x)=(x+2)2−1f(x) = (x+2)^2 - 1.
This is a parabola that opens upwards (since the coefficient of (x+2)2(x+2)^2 is positive). Its minimum value occurs at the turning point (−2,−1)(-2, -1).
The minimum y-value is −1-1.
The range of ff is y≥−1\boxed{y \ge -1}.

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