Given,
sech(x)
to find the value of sechx
we need to find the value of
sechx and
sechx
so,
the value of
sechx is as x tends to negative infinity the sech(x) -> 0
and similarly as
sechx is as x tends to positive infinity the sech(x) -> 0
So,
sechx
sechx
the limit exits forsechx
and the value issechx=0
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