Advanced Math Archive: Questions from August 16, 2023
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Solution with explanation and all details please
Exercise 4.3. Which ones of the following subsets of \\( \\mathbb{R}^{2} \\) are convex and which are not?\r\n\\( \\begin{array}{l}\\left\\{(x, y): y \\geq x^{2}\\right\\} \\\\ \\left\\{(x, y): y \\le2 answers -
1. If \\( \\sin x=\\frac{-3}{5}, \\pi \\leq x \\leq \\frac{3 \\pi}{2} \\) and \\( \\sec y=\\frac{13}{12}, \\frac{3 \\pi}{2} \\leq y \\leq 2 \\pi \\), find the exact value of \\( \\cos (x+y) \\)2 answers -
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1. If \\( \\sin x=\\frac{-3}{5}, \\pi \\leq x \\leq \\frac{3 \\pi}{2} \\) and \\( \\sec y=\\frac{13}{12}, \\frac{3 \\pi}{2} \\leq y \\leq 2 \\pi \\), find the exact value of \\( \\cos (x+y) \\).2 answers -
If sin x = -3 5 > π ≤x≤ 3π 2 and sec y = 13 3π ≤ y ≤ 2π 12 2 9 9 find the exact value of cos(x + y)
If \\( \\sin x=\\frac{-3}{5}, \\pi \\leq x \\leq \\frac{3 \\pi}{2} \\) and \\( \\sec y=\\frac{13}{12}, \\frac{3 \\pi}{2} \\leq y \\leq 2 \\pi \\), find the exact value of \\( \\cos (x+y) \\)2 answers -
Give me the parameterization and graph of the following trajectories
11. \\( \\mathcal{C}=\\{(r, \\theta): r=\\operatorname{sen} 3 \\theta\\} \\). 12. \\( \\mathcal{C} \\) es el segmento que une a los puntos \\( (-1,0,1) \\) y \\( (0,2,3) \\). 13. \\( \\mathcal{C}=\\{(2 answers -
Give me the parameterization and graph of the following trajectories
15. \\( \\mathcal{C}=\\left\\{(x, y): \\sqrt{x^{2}-1}=|y| \\leq 1\\right\\} \\). 16. \\( \\mathcal{C} \\) es la intersección del plano \\( y+z=1 \\) con la esfera \\( x^{2}+y^{2}+z^{2}=1 \\). 17. \\(2 answers -
Demostrar los siguientes teoremas.
Teorema 3.2.3 Sea \\( A \\subseteq \\mathbb{R}^{n} \\). Entonces i).- si \\( X \\subseteq A \\) es abierto en \\( A \\), entonces \\( A \\backslash X \\) es cerrado en \\( A \\). ii).- si \\( Y \\subs2 answers