Choose the correct options for the following questions.
f(x)=cos x is
Difficulty: Easy
A:
An odd function
B:
An even function
C:
An implicit function
D:
An exponential function
f(x)=sinx is
Difficulty: Easy
A:
An odd function
B:
An even function
C:
An implicit function
D:
An exponential function
A function f is said to be odd if f(-x)=
Difficulty: Easy
A:
0
B:
1
C:
f(x)
D:
-f(x)
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