Find an equation of the tangent line to the graph of the function at the given point

Given,

, (0, 1)

to find the tangent quation,

so first find the slope of the tangent and is as follows,

let

so we have to find the f'(x) to get the slope

so,

let

and

so ,

=

so the slope of the line through the point (0,1) is

        =

       = -2.

now the slope is -2 , so the equation of the tangent is ,

so the tangent equation is