please help me to do this problem...
Let $f: \mathbb R\to \mathbb R$ be a continuous function such that $f(q)=\sin q$ for $q\in\mathbb Q$ (rational numbers). Find the value of f(π/4).
please help me to do this problem...
Let $f: \mathbb R\to \mathbb R$ be a continuous function such that $f(q)=\sin q$ for $q\in\mathbb Q$ (rational numbers). Find the value of f(π/4).