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5-6 Inverse Trig Functions: Differentiation (Day 2) Objective: Develop properties of the 6 inverse trig functions and differentiate an inverse trig function. Ms. Battaglia AP Calculus. Definitions of Inverse Trig Functions. Graphs of Inverse Trig Functions. y = arcsinx y = arccosx.
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5-6 Inverse Trig Functions: Differentiation (Day 2)Objective: Develop properties of the 6 inverse trig functions and differentiate an inverse trig function. Ms. Battaglia AP Calculus
Graphs of Inverse Trig Functions y = arcsinx y = arccosx
Graphs of Inverse Trig Functions y = arctanx y = arccscx
Graphs of Inverse Trig Functions y = arcsecx y = arccotx
Evaluating Inverse Trig Functions a. b. c. d.
Properties of Inverse Trig Functions If -1 < x < 1 and –π/2 < y <π/2 then sin(arcsinx) = x and arcsin(siny) = y If –π/2 < y < π/2, then tan(arctanx) = x and arctan(tany) = y If |x| > 1 and 0 < y < π/2 or π/2 < y < π, then Sec(arcsecx) = x and arcsec(secy) = y. Similar properties hold for other inverse trig functions.
Solving an Equation Arctan(3x – π) = 1/2
Using Right Triangles • Evaluate sin(arctan(3/4)) • Evaluate sec(arsin(4/5))
Derivatives of Inverse Trig Functions Let u be a differentiable function of x.
Differentiating Inverse Trig Functions a. b. c. d.
Analyzing an Inverse Trig Graph Analyze the graph of f(x) = arctanx + π/2
See Page 378 for a Review of Basic Differentiation Rules for Elementary Functions.
Classwork/Homework • AB: Page 380 #63, 64, 65, 77, 91-93