18. Which compound angle formula is the easiest to use to develop the expression cos² 0 – sin² 0? a. subtraction formula for sine b. addition formula for sine c. addition formula for cosine - d. subtraction formula for cosine 1 19. Given f(x) = and g(x) = log x 1 8+x' what is the domain of y = f(x)g(x)? a. {x Є R | x > 0 and x ± 8} c. {x Rx = -8 and x = 1} b. {x Є Rx > 0 and x = 1} d. {x Rx > 0} 20. Given f(x) = log 4x and g(x) = x² - 2, which of the following expressions is equivalent to f(g(4))? a. log² 16-2 b. log² 14 c. log 4 x log 14 d. log 4+ log 14
18. Which compound angle formula is the easiest to use to develop the expression cos² 0 – sin² 0? a. subtraction formula for sine b. addition formula for sine c. addition formula for cosine - d. subtraction formula for cosine 1 19. Given f(x) = and g(x) = log x 1 8+x' what is the domain of y = f(x)g(x)? a. {x Є R | x > 0 and x ± 8} c. {x Rx = -8 and x = 1} b. {x Є Rx > 0 and x = 1} d. {x Rx > 0} 20. Given f(x) = log 4x and g(x) = x² - 2, which of the following expressions is equivalent to f(g(4))? a. log² 16-2 b. log² 14 c. log 4 x log 14 d. log 4+ log 14
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter5: Exponential And Logarithmic Functions
Section5.2: Applications Of Exponential Functions
Problem 48E
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Transcribed Image Text:18. Which compound angle formula is the easiest to use to develop the expression cos² 0 – sin² 0?
a. subtraction formula for sine
b. addition formula for sine
c. addition formula for cosine
-
d. subtraction formula for cosine
1
19. Given f(x)
=
and g(x)
=
log x
1
8+x'
what is the domain of y = f(x)g(x)?
a. {x Є R | x > 0 and x ± 8}
c. {x
Rx = -8 and x = 1}
b. {x Є Rx > 0
and x
= 1}
d. {x
Rx > 0}
20. Given f(x) = log 4x and g(x) = x² - 2, which of the following expressions is equivalent to
f(g(4))?
a. log² 16-2
b. log² 14
c. log 4 x log 14
d. log 4+ log 14
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