TURUNAN ORDE TINGGI - Universitas Brawijaya
Transcript of TURUNAN ORDE TINGGI - Universitas Brawijaya
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TURUNAN ORDE TINGGIYUSRON SUGIARTO
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Slide 1.8- 2Copyright © 2008 Pearson Education, Inc.
Publishing as Pearson Addison-Wesley
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Copyright © 2008 Pearson Education, Inc. Publishing as Pearson Addison-Wesley
Higher Order Derivatives
OBJECTIVES
Find derivatives of higher order.
Given a formula for distance, find velocity and acceleration.
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Slide 1.8- 5Copyright © 2008 Pearson Education, Inc.
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Consider the function given by
Its derivative f is given by
The derivative function f can also be differentiated. We can think of the derivative f as the rate of change of the slope of the tangent lines of f . It can also be regarded as the rate at which is changing.
y f (x) x5 3x4 x.
y f (x) 5x4 12x3 1.
f x
HIGHER-ORDER DERIVATIVES
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Higher-Order Derivatives (continued):
We use the notation f for the derivative .
That is,
We call f the second derivative of f. For
the second derivative is given by
f (x) d
dxf (x)
y f (x) x5 3x4 x,
y f (x) 20x3 36x2 .
f
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Higher-Order Derivatives (continued):
Continuing in this manner, we have
When notation like gets lengthy, we abbreviate
it using a symbol in parentheses. Thus is the
nth derivative.
f (x) 60x2 72x, the third derivative of f
f (x) 120x 72, the fourth derivative of f
f (x) 120, the fifth derivative of f .
f x fn x
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Slide 1.8- 8Copyright © 2008 Pearson Education, Inc.
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Higher-Order Derivatives (continued):
For we havey f (x) x5 3x4 x,
f (3)(x) 60x2 72x,
f (4 )(x) 120x 72,
f (5)(x) 120,
f (6)(x) 0, and
f (n)(x) 0, for any integer n 6.
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Higher-Order Derivatives (continued):
Leibniz’s notation for the second derivative of a
function given by y = f(x) is
read “the second derivative of y with respect to x.”
The 2’s in this notation are NOT exponents.
d2y
dx2, or
d
dx
dy
dx
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Higher-Order Derivatives (concluded):
If then y x5 3x4 x,
dy
dx 5x4 12x3 1,
d 4y
dx4 120x 72,
d 2y
dx2 20x3 36x2 ,
d 5y
dx5 120.
d 3y
dx3 60x2 72x,
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Excercise 1: For find d 2y
dx2.y
1
x,
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Excercise 2: For find and .y (x2 10x)20 , y y
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DEFINITION:
The velocity of an object that is s(t) units from a
starting point at time t is given by
Velocity v(t) s (t) limh0
s(t h) s(t)
h
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DEFINITION:
Acceleration a(t) v (t) s (t).
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Excercise 4: For s(t) = 10t2 find v(t) and a(t), where s
is the distance from the starting point, in miles, and t is
in hours. Then, find the distance, velocity, and
acceleration when t = 4 hr.
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TERIMA KASIHYUSRON SUGIARTO