Math131 Exam#3 Name
1. (15) Given f(x)=2x+1andg(x)=x2−3, find
(a) (g◦f)(1)
(b) (f◦g)(x)
(c) f−1
2. (10) Using point-plotting method to sketch the graph of f(x)=2
x.
-
6
3. (10) Evaluate
(a) 200 −5e0.002(65) =
(b) log2
1
16 =
1
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Unsolved Questions of Algebra and Trigonometry | MATH 131, Exams of Trigonometry
Material Type: Exam; Class: Algebra and Trigonometry; Subject: Mathematics; University: Fayetteville State University; Term: Fall 2008;
Typology: Exams
Pre 2010
1 / 3
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Math131 Exam#3 Name
- (15) Given f (x) = 2x + 1 and g(x) = x^2 − 3, find
(a) (g ◦ f )(1)
(b) (f ◦ g)(x)
(c) f −^1
- (10) Using point-plotting method to sketch the graph of f (x) = 2x.
- (10) Evaluate
(a) 200 − 5 e^0 .002(65)^ =
(b) log 2
- (10) Solve for x
(a) 9x−^1 = 3x
(b) 2^2 x^ − 10 · 2 x^ + 16 = 0
- (5) Express in terms of logarithms of a single letter or number to the first power. Assume that all the variables are positive.
log 3
( x^3 y^2 81 z^4
)
- (20) Solve for x
(a) ln x − ln 4 = 5
(b) log 4 x + log 4 (x + 2) =
log 4 9