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Math 12 Chapter 1
Functions & Limits
Test - 6
1.
Domain of 1/x is ……………
a) R
b) {0} – R
c) R – {0}
d) N
2.
If f(x) = 1/x then f
-1
= ………..
a) x
b) 1/x
c) 1/x
2
d) None
3.
y =
√
x-1
is an ………….. function
a) Even
b) Explicit
c) Odd
d) Implicit
4.
Cosec h x =……………….
a) e
x
– e
-x
/2
b) 2/e
x
– e
-x
c) e
x
+ e
-x
/2
d) 2/e
x
+ e
-x
5.
Cos x is an …….. function.
a) Explicit
b) Implicit
c) Odd
d) even
6.
If f(x) = 1/x
2
g(x) =
√
x
then fog = ………..
a)
√
x
b) 1/
√
x
c) x
d) 1/x
7.
Lim a/x = …… where a € IR
x→∞
a) a
b) x
c) ∞
d) 0
8.
Lim (1+2h)
1/h
=……………
h→0
a) 1
b) 0
c) e
d) e
2
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