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Irrational Numbers

★★☆☆☆Middle School

📖Definition

A number that cannot be expressed as a fraction, with infinite non-repeating decimal expansion.

√2 = 1.41421356...

Square root of 2 (infinite non-repeating decimal)

π = 3.14159265...

e = 2.71828182...

Euler's number e

예제 1★★★☆☆

Explain why √2 is irrational.

예제 2★☆☆☆☆

Select the irrational numbers: √4, √5, 0.25, π/2

Diagonal lengths, circle circumference

Growth/decay using Euler's number e

#number#fundamental#irrational#intermediate