A bicycle has 25 -in . wheels (in diameter). a. What distance will the bicycle travel with one rotation of the wheels? Give the exact distance and an approximation to the nearest tenth of an inch. b. How far will the bicycle travel with 200 rotations of the wheels? Give the exact distance and approximations to the nearest inch and nearest foot. c. If the wheels turn at 80 rpm , what is the angular speed? d. If the wheels turn at 80 rpm , what is the linear speed in inches per minute? Give the exact speed and an approximation to the nearest inch per minute. e. If the wheels turn at 80 rpm , what is the linear speed in miles per hours? Round to the nearest mile per hour.
A bicycle has 25 -in . wheels (in diameter). a. What distance will the bicycle travel with one rotation of the wheels? Give the exact distance and an approximation to the nearest tenth of an inch. b. How far will the bicycle travel with 200 rotations of the wheels? Give the exact distance and approximations to the nearest inch and nearest foot. c. If the wheels turn at 80 rpm , what is the angular speed? d. If the wheels turn at 80 rpm , what is the linear speed in inches per minute? Give the exact speed and an approximation to the nearest inch per minute. e. If the wheels turn at 80 rpm , what is the linear speed in miles per hours? Round to the nearest mile per hour.
a. What distance will the bicycle travel with one rotation of the wheels? Give the exact distance and an approximation to the nearest tenth of an inch.
b. How far will the bicycle travel with
200
rotations of the wheels? Give the exact distance and approximations to the nearest inch and nearest foot.
c. If the wheels turn at
80
rpm
, what is the angular speed?
d. If the wheels turn at
80
rpm
, what is the linear speed in inches per minute? Give the exact speed and an approximation to the nearest inch per minute.
e. If the wheels turn at
80
rpm
, what is the linear speed in miles per hours? Round to the nearest mile per hour.
3.
Consider the sequences of functions f₁: [-π, π] → R,
sin(n²x)
An(2)
n
f pointwise as
(i) Find a function ƒ : [-T,π] → R such that fn
n∞. Further, show that fn →f uniformly on [-π,π] as n → ∞.
[20 Marks]
(ii) Does the sequence of derivatives f(x) has a pointwise limit on [-7, 7]?
Justify your answer.
[10 Marks]
1. (i) Give the definition of a metric on a set X.
[5 Marks]
(ii) Let X = {a, b, c} and let a function d : XxX → [0, ∞) be defined
as d(a, a) = d(b,b) = d(c, c) 0, d(a, c) = d(c, a) 1, d(a, b) = d(b, a) = 4,
d(b, c) = d(c,b) = 2. Decide whether d is a metric on X. Justify your answer.
=
(iii) Consider a metric space (R, d.), where
=
[10 Marks]
0
if x = y,
d* (x, y)
5
if xy.
In the metric space (R, d*), describe:
(a) open ball B2(0) of radius 2 centred at 0;
(b) closed ball B5(0) of radius 5 centred at 0;
(c) sphere S10 (0) of radius 10 centred at 0.
[5 Marks]
[5 Marks]
[5 Marks]
(c) sphere S10 (0) of radius 10 centred at 0.
[5 Marks]
2. Let C([a, b]) be the metric space of continuous functions on the interval
[a, b] with the metric
doo (f,g)
=
max f(x)g(x)|.
xЄ[a,b]
= 1x. Find:
Let f(x) = 1 - x² and g(x):
(i) do(f, g) in C'([0, 1]);
(ii) do(f,g) in C([−1, 1]).
[20 Marks]
[20 Marks]
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