MATH 3339 TEST 2 STUDY GUIDE WITH
SOLVED QUESTIONS AND ANSWERS
◉ Reciprocal Function.
Answer: Notation: f(x) = 1/x
Domain: all nonzero real numbers
Range: all nonzero real numbers
◉ Absolute Value Function.
Answer: Notation: f(x) = |x|
Domain: all real numbers
Range: non-negative real numbers
◉ Greatest Integer Function.
Answer: Notation: f(x) = int(x)*
Domain: all real numbers
Range: the set of integers
, ◉ what are the x-intercepts of : x^2-x-12.
Answer: x= 4
x= -3
◉ Solve for x
12x^2-3x-15x^2 = -20x^2+6x+17x^2-9x.
Answer: all real numbers
◉ Solve for x
-2/3x^4 - 2x^3 + 5/2x = -2/3x^2 +1/2.
Answer: x= 2.86
x= -1.34
x= 1
x = .20
◉ Solve for x
3x/x-1 = 6/x-1.
Answer: D {x|x≠1}
x=2
SOLVED QUESTIONS AND ANSWERS
◉ Reciprocal Function.
Answer: Notation: f(x) = 1/x
Domain: all nonzero real numbers
Range: all nonzero real numbers
◉ Absolute Value Function.
Answer: Notation: f(x) = |x|
Domain: all real numbers
Range: non-negative real numbers
◉ Greatest Integer Function.
Answer: Notation: f(x) = int(x)*
Domain: all real numbers
Range: the set of integers
, ◉ what are the x-intercepts of : x^2-x-12.
Answer: x= 4
x= -3
◉ Solve for x
12x^2-3x-15x^2 = -20x^2+6x+17x^2-9x.
Answer: all real numbers
◉ Solve for x
-2/3x^4 - 2x^3 + 5/2x = -2/3x^2 +1/2.
Answer: x= 2.86
x= -1.34
x= 1
x = .20
◉ Solve for x
3x/x-1 = 6/x-1.
Answer: D {x|x≠1}
x=2
