Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Question
How to solve Q19 a and b. Thank you.

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Trig Functions.pdf
Page 37 of 46
Chapter 7 The trigonometric functions
18 Find
d
dx
(x sin 2x), and hence find
19 a Show that
i
2 sin 3x cos 2x dx
✔
[si
ing the primitive,
(²³
d -(tan³ x) = 3 (sec¹ x - sec² x).
dx
c Show that
0
x cos 2x dx.
20 a Show that sin (A + B) + sin (A - B) = 2 sin A cos B.
b
Hence find:
√³2
0
0,
72% 4
ho identity
☎ Q
ii
Q Search
b Hence find
nd ₁ se
Sat 29 Apr 11:54:37 am
sin mx cos nx dx = 0 for positive integers m and n:
sec+ x dx.
si
sin 3x cos 4x dx
ii using symmetry arguments.
ENRICH
7 sin x + 11 cos x.
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