Question

write the domain of the
function y=sec-1 x​

Answer 1

Here, F(x)=y=sec

−1

x

So, x=secy

now the Range of secy is domain of sec

−1

x

i.e secy is possible in

R−(−1,1) So the Range

of secy is R−(−1,1) .. And

domain of F(x)=sec

−1

x is

R−(−1,1)

or we can say Domain of F(x)=

sec

−1

is (−∞,−1] U[1,∞)