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Math 12 Chapter 1
Functions & Limits
Test - 6
1.
If a vertical line cuts a graph in more than one point, then it is a function
a) False
b) True
2.
For any set X a function I : X
®
X or I(x) = x,
"
x
e
X, it is called an inverse function.
a) False
b) True
3.
Let f & g be function defined on variable x then f g(x) = gf(x).
a) True
b) False
4.
Domain of sec
x
is {x : x
e
R and x
¹
(2x +1)
p
/2}.
a) True
b) False
5.
lim
x
®
a
(x
n
-a
n
) / (x-a) = na
n-1
a) True
b) False
6.
Cosine function is an even function.
a) False
b) True
7.
The domain of f(x) = x
2
is the set of all Rational Nos.
a) False
b) True
8.
When variables x & y are expressed in terms of another variable, then it is called polynomial function.
a) Fasle
b) True
9.
If g(x) = 2
x
than it is called a logarithmic function.
a) False
b) True
10.
Rational function is defined as where P(x) / Q(x) are polynomials and Q(x)
¹
0.
a) False
b) True
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