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Pocho la pantera

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Answers (98)

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7	Is there limit $ \lim_{(x,y) \to (0,0)} \frac{x^3}{x^2 + y^2}$?
6	If $(\nabla f(x)-\nabla f(y))\cdot(x-y)\geq m(x-y)\cdot(x-y)$, why is $f$ convex?
5	$(0 \leq f' \leq f$ on $\mathbb R$ and $f(a)=0)$ $\implies f=0$?
5	A difficulty solving a limit
5	Prove $\frac {1}{\cos 0^\circ \cdot \cos 1^\circ} + \ldots +\frac {1}{\cos 88^\circ \cdot \cos 89^\circ}= \frac{\cos 1^\circ}{\sin 1^\circ}$

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Questions (3)

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9	supremum of $\int \|\int f(x)-f(y)\,dy\| \,dx $.
1	Convergence of sequence of probabilities (competition problem)
0	behavior of function at infinite

Tags (62)

34 calculus × 19	14 multivariable-calculus × 10
24 sequences-and-series × 11	11 analysis × 5
19 ordinary-differential-equations × 25	10 partial-differential-equations × 7
17 real-analysis × 12	9 integration × 8
15 limits × 5	9 induction × 2

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0	behavior of function at infinite

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