real number

real number   Dan real number

A cut for which there is no largest number in the lower class, and no smallest number in the upper class, is said to be an irrational number

Real Numbers: Any number that can be plotted on a number line · Rational Numbers: Any number that can be written as a fraction, including repeating decimals  The real number system · N: natural numbers are {1;2;3;…} · N0: whole numbers are {0;1;2;3;…} · Z: integers are {…;−3;−2;−1;0;1;2;3;…}

ขุนหลวงหาวัด R = real numbers, Z = integers, N=natural numbers, Q = rational numbers, P = irrational numbers • ⊂= proper subset ⊆=subset  Thus, real numbers broadly include all rational and irrational numbers They are represented by the symbol R and have all numbers from negative infinity,