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As the function is true for all values of $x$ and $y$. Then for $x$ and $y$ be $0$, it should be true. You have to prove that, there exists no other function.
আরো একটি সহজ ফাংশন
$$f(x^2y)=f(x)–f(y)$$
There exist $w$ functions $f$ such that the above equation is true for all real values of $x$ and $y$.
If, $\frac{w}{5}+\frac{16}{20}=p$, then $p^p+3p=?$
Function
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