1.- Which of these sentences is true?
a) A function can't have a Real Number without an image
b) The range of a function can have only one element
c) The domain of a function can't have only one element
d) The range of a function can't be R
2.- If f(x) = √x and g(x) = x2 - 5x - 1, then g°f equals:
a) x - 5√x - 1
b) √(x2 - 5x - 1)
c) (x2 - 5x - 1)√x
d) None of them
3.- If f(x)= √(x + 3), then f-1(x) equals:
a) x2 + 3
b) x2
c) x2 -3
d) it doesn't exist
4.- If f(x)= 1/(x + 1), then f-1(x) equals:
a) 1/(x + 1)
b) 1/(x - 1)
c) x/(1 - x)
d) (1 - x)/x
5.- The limit of f as x approaches 0, if
is:
a) 7
b) 0
c) 5
6.-
a) ∞
b) -∞
c) 7
d) 1
7.-
b) -1
c) 0
d) ∞
8.-
a) e-3/7
b) e
d) e-21
9.-
a) 0
b) ∞
c) e7
d) e
10.-
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