Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Let `fR -> R` is one -one, onto and differentiable function and `f(4+x) = -f(4-x)`. Then which of the following is incorrect? - Sarthaks eConnect

Let `f:R -> R` is one -one, onto and differentiable function and `f(4+x) = -f(4-x)`. Then which of the following is incorrect?

`f^-1(2014)+ f^-1(-2014) = 8`

`int_(-2014)^2022 f (x) dx=0`

If `f'(-12)> 0`, then roots of `x^2 -(f'(20))x-f'(20)` = 0are non-real

if f’(10) =20,then f’ (-2) = 20