Find the inverse function of this function y = 1 / 2 (ex-e-x)? See the supplement for details Let's help

Find the inverse function of this function y = 1 / 2 (ex-e-x)? See the supplement for details Let's help

Let e ^ x = t and t be greater than 0
Then 2 * y = T-1 / T
t^2-2*y*t-1=0
By solving the equation, t = y + root sign (y ^ 2 + 1) negative heel has been removed
E ^ x = y + radical (y ^ 2 + 1)
Take logarithm of X and y to get
Y = ln [x + radical (x ^ 2 + 1)]