imaginaariyksiköllä
Imaginaariyksiköllä, often denoted by the symbol 'i', is a fundamental concept in mathematics, specifically within the realm of complex numbers. It is defined as the square root of negative one, meaning that i² = -1. This definition allows for the expansion of the number system beyond real numbers, enabling the solution of equations that have no real solutions, such as x² + 1 = 0.
Complex numbers are typically expressed in the form a + bi, where 'a' is the real part and
The introduction of the imaginary unit by mathematicians like Gerolamo Cardano and later formalized by Leonhard