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Graph the solution set of each system of inequalities or indicate that the system has no solution. $$ \left\\{\begin{array}{l} {x^{2}+y^{2}<16} \\ {y \geq 2^{x}} \end{array}\right. $$

Short Answer

Expert verified
The solution set is the region enclosed by the circle \(x^{2}+y^{2}<16\) and above the curve \(y \geq 2^{x}\).

Step by step solution

01

Graph the circle

The first graph corresponds to the equation \(x^{2}+y^{2}=16\). This is a circle centered at the origin with radius 4. Since the inequality is \(x^{2}+y^{2}<16\), the solution will be the interior of this circle.
02

Graph the exponential inequality

The graph of \(y=2^{x}\) is a rising curve, with the y-value becoming larger as x increases. The inequality \(y \geq 2^{x}\) represents the region above this curve.
03

Find the intersection of the two regions

The solution of the system of inequalities is the intersection of the two regions, that is, the points that satisfy both inequalities. This will be the region inside the circle and above the curve \(y=2^{x}\).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Circle Graph
A circle graph is a visual representation of a circle equation, such as the one provided in the exercise, where \(x^{2}+y^{2}=16\). When graphing this function, you're pinpointing every set of coordinates \((x, y)\) that satisfy the equation on a coordinate plane. If we think of each point \((x, y)\) in terms of distance from the origin \((0, 0)\), this distance is the radius of the circle.

In the given problem, the inequality \(x^{2}+y^{2}<16\) asks us to illustrate not just a boundary line, but an entire area. This means we're looking at all the points that are within a distance of 4 units from the origin, but not those points exactly 4 units away. Imagine this as shading the interior of a circle without including its circumference. Understanding circle graphs is crucial as it provides a foundation for visualizing solutions to circular inequalities.
Exponential Functions
Exponential functions, such as \(y=2^{x}\) in our system, show how one quantity changes as another quantity grows exponentially. The base of the exponential, here 2, indicates the factor by which the \(y\)-value multiplies every time the \(x\)-value increases by 1. Graphically, this type of function starts off slow, close to the x-axis, and then increases rapidly.

When graphing inequalities with exponential functions like \(y \text{≥} 2^{x}\), it's essential to understand that the graph gives us a visual guide to where the \(y\)-values are either greater than or equal to the function's value. This usually translates to shading the area above the curve on a graph. Exponentials can be intimidating due to their quick growth, but remember that their graphs anchor you in understanding how these functions scale.
Inequalities Intersection
Intersection in the context of inequalities is akin to finding a common ground. When we deal with a system of inequalities, we are asked to find the set of points that satisfy all inequalities simultaneously.

In our case, the intersection consists of all points that lie within the circle \(x^{2}+y^{2}<16\) and at the same time are above or on the curve of \(y=2^{x}\). The graphical representation is the overlapped area between these two regions. Think of this as a Venn diagram where only the overlapping section pertains to the final solution. Mastering the concept of intersection can significantly bolster a student's ability to solve complex system of inequalities.
Graphing Inequalities
Graphing inequalities involves drawing the function implied by the inequality and then shading the relevant area that represents the solution. For linear inequalities, this could be as simple as shading one side of a line. However, with nonlinear inequalities such as the ones in our exercise, this task involves shading a curved region, and sometimes, as with circle inequalities, an entire area bound by a curve.

Graphing is a powerful tool for visual learners, as it turns abstract inequalities into tangible regions on a plane. When graphing, it's important to first plot the equality part of the inequality (the 'boundary') before deciding which side of this boundary to shade. Remember, dashed lines mean the points on the line are not included in the solution, while solid lines mean they are included.

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Most popular questions from this chapter

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