Question

2. Which of the following is/are even function ?
(a) x
(b) sin x
(c) tan x
(d) cos x and sec x​

Answer 1

Answer:

We know sinhx=

2

e

x

−e

−x

,coshx=

2

e

x

+e

−x

Clearly coshx is even and sinhx is an odd function.

∴

Function

Type

tanhx odd

cosechx

odd

sechx+coshx even

tanhx+cothx

odd