Family of Curves
A family of curves is a group of curves that are each described by a parametrization in which one or more variables are parameters. In general, the parameters have more complexity on the assembly of the curve than an ordinary linear transformation. These families appear commonly in the solution of differential equations. When a constant of integration is added, it is normally modified algebraically until it no longer replicates a plain linear transformation. The order of a differential equation depends on how many uncertain variables appear in the corresponding curve. The order of the differential equation acquired is two if two unknown variables exist in an equation belonging to this family.
XZ Plane
In order to understand XZ plane, it's helpful to understand two-dimensional and three-dimensional spaces. To plot a point on a plane, two numbers are needed, and these two numbers in the plane can be represented as an ordered pair (a,b) where a and b are real numbers and a is the horizontal coordinate and b is the vertical coordinate. This type of plane is called two-dimensional and it contains two perpendicular axes, the horizontal axis, and the vertical axis.
Euclidean Geometry
Geometry is the branch of mathematics that deals with flat surfaces like lines, angles, points, two-dimensional figures, etc. In Euclidean geometry, one studies the geometrical shapes that rely on different theorems and axioms. This (pure mathematics) geometry was introduced by the Greek mathematician Euclid, and that is why it is called Euclidean geometry. Euclid explained this in his book named 'elements'. Euclid's method in Euclidean geometry involves handling a small group of innately captivate axioms and incorporating many of these other propositions. The elements written by Euclid are the fundamentals for the study of geometry from a modern mathematical perspective. Elements comprise Euclidean theories, postulates, axioms, construction, and mathematical proofs of propositions.
Lines and Angles
In a two-dimensional plane, a line is simply a figure that joins two points. Usually, lines are used for presenting objects that are straight in shape and have minimal depth or width.
![### Standard Form of a Circle
Consider the equation given:
\[ (x + 2)^2 + (y + 9)^2 = 196 \]
This equation represents a circle in standard form, \((x-h)^2 + (y-k)^2 = r^2\), where \((h, k)\) is the center of the circle and \(r\) is the radius.
**Exercise 9:**
Given the equation:
\[ (x + 2)^2 + (y + 9)^2 = 196 \]
- **Identify the Center:**
The center \((h, k)\) of the circle can be found directly from the equation. In this case, \((h, k)\) is \((-2, -9)\).
- **Calculate the Circumference:**
The radius \(r\) is the square root of the right side of the equation.
\[
r^2 = 196 \implies r = \sqrt{196} = 14
\]
The circumference \(C\) of the circle is given by the formula \(C = 2\pi r\).
\[
C = 2\pi \times 14 = 28\pi
\]
**Form Format to Complete:**
- **Center:** \( (-2, -9) \)
- **Circumference:** \( 28\pi \)
This exercise helps you understand how to extract the center and radius from the standard form of a circle equation and subsequently use the radius to determine the circumference of the circle.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa7596019-6a00-40b6-acbc-de98b6fa36ba%2Ffc856982-db73-4144-8597-30b9f859c2a2%2Fpxslddc_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
