Real numbers
Real numbers are a vast and essential category of numbers that includes all rational numbers (numbers that can be expressed as a fraction), as well as all irrational numbers (numbers that cannot be expressed as a fraction)
Real numbers are a vast and essential category of numbers that includes all rational numbers (numbers that can be expressed as a fraction), as well as all irrational numbers (numbers that cannot be expressed as a fraction). In other words, real numbers encompass the entire number line.
Real numbers can be positive or negative, and they can be whole numbers, decimals, or fractions. Examples of real numbers include 4, -3.5, 1/2, √2 (which is an irrational number), π (pi), and -√5.
Real numbers can be operated upon using various mathematical operations like addition, subtraction, multiplication, and division. They also follow the properties of arithmetic, such as the commutative, associative, and distributive properties.
Real numbers are not limited to numerical values; they can also include important mathematical concepts like infinity (∞), as well as special numbers like e (Euler’s number), which is an irrational number that appears frequently in various branches of mathematics.
Real numbers find applications in various fields, including algebra, calculus, geometry, and physics. They provide a foundation for mathematical analysis and play a crucial role in understanding and describing quantities and phenomena in the real world.
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