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台灣大學 113 年度 微積分(A)

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主要題型
Continuous functions 2Infinite Series 2Vector calculus 1Integrals 1

微積分(A) 其他年度考古題

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115Continuous functions
Consider the sequence of functions {fn}n=1\{f_n\}_{n=1}^{\infty}, where fn(x)=x1+nx2f_n(x) = \frac{x}{1+nx^2}. Does fnf_n converge uniformly on R\mathbb{R}? Justify your result.
215Infinite Series
Show that m,n=1(m+n)p\sum_{m,n=1}^{\infty}(m+n)^{-p} converges if and only if p>2p > 2.
320Continuous functions
Let f(x,y):R2Rf(x,y): \mathbb{R}^2 \to \mathbb{R} be a C1C^1 function. Show that we can find two points p,qR2p,q \in \mathbb{R}^2 so that pqp \neq q and f(p)=f(q)f(p) = f(q).
415Infinite Series
Assume {an}n=1\{a_n\}_{n=1}^{\infty} are positive, and limnan+1an=L\lim\limits_{n\to\infty} \frac{a_{n+1}}{a_n} = L. Show that limn(an)1/n=L\lim\limits_{n\to\infty}(a_n)^{1/n} = L.
515Vector calculus
Let SS be the surface formed by paraboloid z=1x2y2,z0z = 1 - x^2 - y^2, z \geq 0, and the unit disk centered at the origin in xyxy plane. Let F=(0,0,z)F = (0,0,z). Compute SFnds\iint_S F \cdot n ds, where nn is the unit outward normal vector on SS.
620Integrals
Consider the integral g(x)=0sinttetxdtg(x) = \int_0^{\infty} \frac{\sin t}{t} e^{-tx} dt. Show that the integral converges uniformly for x0x \geq 0.