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Real-valued functions of real variable, analytic properties of functions and sequences, limits, continuity, smoothness of these.
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Volumes of families of semialgebraic sets
Let $f_0(T),f_1(T) \in \mathbb R [T]$ be polynomials. Let $F(T,X):=X^2+f_1(T)X+f_0(T)$. Then the set $M(t):=\{x \in \mathbb R \mid F(t,x) \le 0\}$ is bounded. Its volume $V(t)$ is $\sqrt{\max\{0,f_1(T …