Question

If a differentiable function ' $f$ ' satisfies the relation $f(x+y)-f(x-y)=4xy-10y\forall x,y\in R$ and $f(1)=2$, then find the number of points of non-derivability of $g(x)=||f(|x|)\left|-\frac{1}{4}\right|$.

Answer 1

Answer: 0009

$f(x)=x^2-5x+6$