Math and Python Test Package Answers/Solutions

Solutions to other tests:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Mathematics for the Digital Age
and
Programming in Python

>>> Second Edition

Test 3

1.: (a), (b), (d), (e)
2.: (a) T (b) F (c) T
3.: (a), (b), (c)
4.: (a) T (b) T (c) T
5.: D
6.: (a), (c)
7.: C
8.: C
9.: B
10.: B

11.: A
12.: (a) T (b) F (c) T
13.: D
14.: C
15.: (a) T (b) T (c) F
16.: A
17.: (a) T (b) F (c) T (d) F
18.: D
19.: B
20.: B

21.

10 * '*' + s + 10 * '*'

22.

def someTan(x):
    t = math.tan(x)
    return t / (1 - t**2)

23.

def printA(): print(' A ') print(' A A ') print(' AAAAA ') print('A A')

24.

def heron(a, b, c): '''Uses Heron's formula to calculate the area of a triangle with given lengths of its sides, a, b, and c; returns the area.''' s = (a + b + c) / 2 return sqrt(s * (s - a) * (s - b) * (s - c))

25.

def first_digit(n): s = str(n) return int(s[0])

26.

def swap(lst): temp = lst[0] lst[0] = lst[-1] lst[-1] = temp or def swap(lst): lst[0], lst[-1] = lst[-1], lst[0]