Question

If the range of the function f(x) = (e^x - 1)/(e^x + 1) is (a, b) then find the value of (a² + b² + 2) 

Answer 1

Thus, the range is (– 1, 1) 

Clearly, a = –1, b = 1 

Hence, the value of (a² + b² + 2) is 4.