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Ch. 5 Review: Integrals. AP Calculus. 5.2: The Differential dy 5.2: Linear Approximation 5.3: Indefinite Integrals 5.4: Riemann Sums (Definite Integrals) 5.5: Mean Value Theorem/ Rolle’s Theorem. Ch. 5 Test Topics. dx & dy : change in x and y for tangent (derivative).
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Ch. 5 Review: Integrals AP Calculus
5.2: The Differential dy 5.2: Linear Approximation 5.3: Indefinite Integrals 5.4: Riemann Sums (Definite Integrals) 5.5: Mean Value Theorem/Rolle’s Theorem Ch. 5 Test Topics
dx & dy: change in x and y for tangent (derivative) Tangent line The Differential dy
Find the differential dy: y = dy = (6x – 4) dx
Write the equation of the line that best fits at x = 2. Then find dx, and dy if f(2.01) is approximated. Equation: dx dy Linear Approximation
Write the equation of the line that best fits at x = 2. Then find dx, and dy if f(2.01) is approximated. Point of tangency: f(2) = -2 Slope of tangent (deriv): y’ = 6x – 7 when x = 2 5 Sub into pt-slope equation: y – y + 2 = 5(x – 2) y = 5x – 12 If x = 2.01, y = -1.95 : Function change in y: f(2.01) – f(2) = .0503 dx: Tangent line change in x -- 2.01 – 2 = .01 dy: Tangent line change in y for x = 2 to 2.01: -1.95 - -2 = .05 or dy = f’(x) dx at x = 2 (6(2) – 7)(.01) = .05 Linear Approximation
If a function is continuous and differentiable on the interval [a, b], then there is at least one point x = c at which the slope of the tangent equals the slope of the secant connecting f(a) and f(b) Mean Value Theorem
If a function f is: • Differentiable for all values of x in the open interval (a, b) and • Continuous for all values of x in the closed interval [a, b] Then there is at least one number x = c in (a, b) such that f’(c) = Mean Value Theorem (MVT)
If a function is differentiable and continuous on the interval [a, b], and f(a) = f(b) = 0, then there is at least one value x = c such that f’(c) = 0. Rolle’s Theorem
Remember – Function must be CONTINUOUS and DIFFERENTIABLE on interval! Otherwise, conclusion of MVT may not be met. Mean Value Theorem