Honors Algebra II with Trigonometry Ms. Lee Graphing Radicals Honors Algebra II with Trigonometry Ms. Lee

Essential Stuff Essential Question Essential Vocabulary How do you graph radical functions? Essential Vocabulary Radical Function Perfect Square/Cube Domain Range

Square Root Function The square root is the inverse to the Quadratic function The parent function is y= 𝒙

Domain & Square Roots We cannot take an even root of a negative number and get a real answer. So, to find domain, we must set the radicand ≥𝟎. For example, if 𝒇 𝒙 = 𝒙+𝟒 , to find the domain we would say 𝑥+4≥0 or 𝑥≥−4. The domain is 𝐷:𝑥≥−4

Cube Root Function The cube root is the inverse to the Cubic function The parent function is y= 𝟑 𝒙

Domain & Cube Roots We can take an odd root of any number, positive or negative. So the domain is always All Real Numbers

Homework 6.4