Lesson 33 – Inequalities with Radical Functions

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Presentation transcript:

Lesson 33 – Inequalities with Radical Functions Math 2 Honors - Santowski 10/10/2019 Math 2 Hon - Santowski

Fast Five Define a 1:1 function Is f(x) = √x a 1:1 function? Is f(x) = √x the inverse FUNCTION of g(x) = x2? Is f(x) = x2 a 1:1 function? Explain why using the inverse function to create “an equivalent system” sometimes doesn’t “work” and we get extraneous solutions Q? Will you get extraneous solutions when you solve cube root equations? Why? Why not? 10/10/2019 Math 2 Hon - Santowski

Radical Inequalities Recall that “rules” & “processes” for inequalities are sometimes different for inequalities than they are for equations Ex: Solve ALGEBRAICALLY 10/10/2019 Math 2 Hon - Santowski

Radical Inequalities Recall that “rules” & “processes” for inequalities are sometimes different for inequalities than they are for equations Ex: Solve GRAPHICALLY  SO WHAT’S different??? 10/10/2019 Math 2 Hon - Santowski

Solutions 10/10/2019 Math 2 Hon - Santowski

Radical Inequalities So the key point in radical inequalities is to: (a) Check your solution (b) check your domain 10/10/2019 Math 2 Hon - Santowski

(B) Radical Inequalities - Examples Solve & verify algebraically 10/10/2019 Math 2 Hon - Santowski

(B) Radical Inequalities - Examples 10/10/2019 Math 2 Hon - Santowski

(B) Radical Inequalities - Examples Solve and verify (algebraically) 10/10/2019 Math 2 Hon - Santowski

(B) Radical Inequalities - Examples Solve and verify (algebraically) 10/10/2019 Math 2 Hon - Santowski

Homework p. 542 # 27-37 odds, 38, 45, 47, 49, 50, 52, 55, 59, 60 10/10/2019 Math 2 Hon - Santowski