For any number c , we let f c ( x ) be the smaller of the two numbers ( x − c ) 2 and ( x − c − 2 ) 2 . Then we define g ( c ) = ∫ 0 1 f c ( x ) d x . Find the maximum and minimum values of g ( c ) if − 2 ⩽ c ⩽ 2
For any number c , we let f c ( x ) be the smaller of the two numbers ( x − c ) 2 and ( x − c − 2 ) 2 . Then we define g ( c ) = ∫ 0 1 f c ( x ) d x . Find the maximum and minimum values of g ( c ) if − 2 ⩽ c ⩽ 2
Solution Summary: The author explains that the function f_c(x) is defined as follows for any number.
For any number
c
, we let
f
c
(
x
)
be the smaller of the two numbers
(
x
−
c
)
2
and
(
x
−
c
−
2
)
2
. Then we define
g
(
c
)
=
∫
0
1
f
c
(
x
)
d
x
. Find the maximum and minimum values of
g
(
c
)
if
−
2
⩽
c
⩽
2
Explain the key points and reasons for 12.8.2 (1) and 12.8.2 (2)
Q1:
A slider in a machine moves along a fixed straight rod. Its
distance x cm along the rod is given below for various values of the time. Find the
velocity and acceleration of the slider when t = 0.3 seconds.
t(seconds)
x(cm)
0 0.1 0.2 0.3 0.4 0.5 0.6
30.13 31.62 32.87 33.64 33.95 33.81 33.24
Q2:
Using the Runge-Kutta method of fourth order, solve for y atr = 1.2,
From
dy_2xy +et
=
dx x²+xc*
Take h=0.2.
given x = 1, y = 0
Q3:Approximate the solution of the following equation
using finite difference method.
ly -(1-y=
y = x), y(1) = 2 and y(3) = −1
On the interval (1≤x≤3).(taking h=0.5).
Consider the function f(x) = x²-1.
(a) Find the instantaneous rate of change of f(x) at x=1 using the definition of the derivative.
Show all your steps clearly.
(b) Sketch the graph of f(x) around x = 1. Draw the secant line passing through the points on the
graph where x 1 and x->
1+h (for a small positive value of h, illustrate conceptually). Then,
draw the tangent line to the graph at x=1. Explain how the slope of the tangent line relates to the
value you found in part (a).
(c) In a few sentences, explain what the instantaneous rate of change of f(x) at x = 1 represents in
the context of the graph of f(x). How does the rate of change of this function vary at different
points?
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