Presentation on theme: "1.1 Write Complex Numbers. Vocabulary A number r is a square root of a number s if r 2 = s. The expression is called a radical. –The symbol is a radical."— Presentation transcript:
Vocabulary A number r is a square root of a number s if r 2 = s. The expression is called a radical. –The symbol is a radical sign and the number s beneath the radical sign is the radicand of the expression.
Vocabulary Product Property of Radicals Quotient Property of Radicals
Vocabulary A complex number written in standard form is a number a + bi where a and b are real numbers. –The number a is the real part of the complex number, and the b number is the imaginary part. –Example: 2 + 3i Real Part Imaginary Part
Vocabulary If b = 0, then a + bi is an imaginary number. If a = 0 and b = 0, then a + bi is a pure imaginary number. –0 + bi = bi (there is not an real part…NO “a”)
Vocabulary Two complex numbers a + bi and c + di are equal if and only if a = c and b = d. For example, if x + yi = 5 – 3i, then x = 5 and y = -3