Here was your error. i is NOT -1. Its square is -1: i2= -1.Keba said:Homework Statement
I was looking up complex numbers and the guy on YouTube made something similar to this equation:
i=-1
c^2-(d^2*i^2) = c^2+d^2
( - 2:55)
Homework Equations
I do not understand why it is "c^2+d^2" and not "c^2-d^2"
I would like a detailed explanation, as I might have misunderstood algebra somehow
The Attempt at a Solution
I would do this to find a solution
c^2-(d^2*i^2)
c^2-(d^2*(-1)^2)
c^2-(d^2*1)
c^2-d^2
Algebra 101 is an introductory course in mathematics that covers basic algebraic concepts and techniques, such as solving equations, graphing lines and functions, and manipulating algebraic expressions.
Algebra 101 is important because it provides the foundation for more advanced mathematical concepts and real-world applications. It also helps develop critical thinking and problem-solving skills.
Complex numbers are numbers that contain both a real and an imaginary part. They are typically written in the form a + bi, where a is the real part, b is the imaginary part, and i is the imaginary unit (defined as the square root of -1).
Complex numbers are used in various fields of mathematics, physics, and engineering to solve problems that involve both real and imaginary quantities. They also have practical applications in electrical engineering, signal processing, and quantum mechanics.
The difficulty of Algebra 101 can vary depending on the individual's background and mathematical aptitude. However, with proper study and practice, most students are able to grasp the concepts and succeed in the course.