Mathematics

Mathematics is a science which used to measure and calculate and used as an aid in solving problems in daily living, such as in trade, industry, mechanics, science, and others. Therefore mathematics can be said as the queen of all sciences.

Matematika adalah suatu ilmu yang digunakan untuk mengukur dan menghitung dan digunakan sebagai alat bantu dalam pemecahan masalah dalam kehidupan sehari-hari, seperti dalam perdagangan, industri, mekanika, sains, dan lain-lain. Karena itu matematika dapat dikatakan sebagai ratunya semua ilmu.

Bilangan Kompleks

Complex numbers

In mathematics, complex numbers are numbers that form a + bi where a and b are real numbers, and i is a specific imaginary number that have the nature of i 2 = -1. The real number a is called the real part of complex number, and the real number b is the imaginary part. If at any complex number, the value of b is 0, then the complex number is to be as Deng real number a. For example, 3 + 2i is a complex number with real part 3 and imaginary part 2.

Complex numbers can be added, subtracted, multiplied, and divided like the real numbers, complex numbers but also have additional properties of interest. For example, every algebraic polynomial equation has the solution of complex numbers, unlike the real numbers that have only partially.

In certain fields (such as electrical engineering, where i is used as a symbol for electric current), complex numbers written a + bj.