Let E$\mathbb{E}$ be the elliptic curve y^2 = x^3 + 6x modulo 11$y^2 = x^3 + 6x \text{ mod } 11$ and consider the point P = point (2, 3)$P = (2, 3)$ on it.
How do I compute 3P$3P$?
I have been able to figure out what 2P$2P$ is, 2P = (5,10) mod 11
$2P = (5,10)$. However I am unsure if even knowing 2P$2P$ is helpful, or do I just compute 3P$3P$ from knowing the original P$P$?