We know any polynomial with degree n over real field has at most n roots.Let $p(x)$ is a bivariate polynomial with degree $n$ over prime field $F_p$. How many roots existe over $F_p$ ?If $p(x)$ be a univariate polynomial, what is answer?
How to find $\lim_{h\rightarrow 0}\frac{\sin(ha)}{h}$ without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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