Advanced Math Archive: Questions from October 01, 2023
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part 7,8,9,10,11,12,13,14,15 solve it by series expansion of operator
In Problems 7 to 15, find a particular solution by using Method 3. 7. \( y^{\prime \prime}-y^{\prime}+y=x^{3}-3 x^{2}+1 \). 8. \( y^{\prime \prime \prime}-2 y^{\prime}+y=2 x^{3}-3 x^{2}+4 x+5 \). 9. \1 answer -
Check for continuity
\( f(x, y)=\left\{\begin{array}{ll}\frac{x^{2}+y^{2}}{\tan x y} & \text { if }(x, y) \neq(0,0) \\ 0 & \text { if }(x, y)=(0,0)\end{array}\right. \)1 answer -
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(40 Points) Given: \[ { }_{B}^{A} T=\left[\begin{array}{cccc} 0.25 & 0.43 & 0.86 & 5 \\ 0.87 & -0.5 & 0 & -4.0 \\ 0.43 & 0.75 & -0.5 & 3.0 \\ 0 & 0 & 0 & 1 \end{array}\right] \] Find \( { }_{A}^{B} T1 answer -
34. \( y=2 e^{x}+x, \quad(0,2) \) 35. \( y=x+\frac{2}{x}, \quad(2,3) \) 36. \( y=\sqrt[4]{x}-x \), 31-32 Find an equation of the tangent line to the given curve at the specified point. 31. \( y=\0 answers -
\[ \begin{array}{l} \text { Let } U=\{q, r, s, t, u, v, w, x, y, z\}, \\ A=\{q, s, u, w, y\}, \\ B=\{q, s, y, z\}, \text { and } \\ C=\{v, w, x, y, z . \end{array} \] Determine the elements of the set1 answer -
Given the function \( f(x, y)=2 x e^{2 x^{2} y}-3 x^{5} y^{2} \). (a) \( f_{x}(x, y) \) b) \( f_{x}(0, y) \) c) \( f_{y}(x, y) \) 1) \( f_{y}(0, y) \) \( f_{x x}(x, y) \) \( f_{y y}(x, y) \) \[ f_{x y1 answer -
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9. Demuestra que \( x^{2}+4 x+17 \) es \( O\left(x^{3}\right) \), pero que \( x^{3} \) no es \( O\left(x^{2}+4 x+17\right) \). 5. Demuestra que \( \left(x^{2}+1\right) /(x+1) \) es \( O(x) \). 11.1 answer -
(1 point) Let \( f(x, y, z)=\frac{x^{2}-6 y^{2}}{y^{2}+2 z^{2}} \). Then \[ \begin{array}{l} f_{x}(x, y, z)= \\ f_{y}(x, y, z)= \\ f_{z}(x, y, z)= \end{array} \]1 answer -
Resolver por método de superposición, anulador y variacion de parametros
\begin{tabular}{|c|c|c|c|c|} \hline \multicolumn{2}{|c|}{ Ecuación diferencial lineal con coeficientes constante } & \multicolumn{2}{c|}{\( \begin{array}{c}\text { Coeficientes } \\ \text { indetermi0 answers -
PRACTICA NO. 1 INTEGRALES IMPROPIAS DEPENDIENTES DE UN PARÁMETRO. 1) \( \phi(\alpha)=\int_{0}^{\infty} e^{-\left(x^{2}+\frac{\alpha^{2}}{x^{2}}\right)} d x \) comprobar que \( \phi(\alpha) \) es unif1 answer -
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5. Halle los limites de 5 de los siguientes incisos a) \( \frac{9+\frac{n}{n+1}}{2+\frac{1}{n}} \) b) \( \frac{3+0.5^{n}}{0.3^{n+1}+5} \) c) \( \frac{n}{3 n+2} \) d) \( \frac{2-n}{n+1}+\frac{n 2^{-n}}1 answer -
Determina los puntos de continuidad de las siguientes funciones: a) \( f:[-1,1] \longrightarrow \mathbb{R} \) dada por \[ f(x)=\left\{\begin{array}{ll} x & \text { si } ; x \in \mathbb{Q} \cap[-1,1] \1 answer -
12. Sea \( X \) un espacio métrico y \( F \subseteq X \). Demuestra las siguientes propiedades. a) Demuestra que \( F \) es cerrado si y sólo si para cada sucesión \( \left\{x_{n}\right\} \) en \(1 answer -
3. (5 points) Suppose that \( \varphi \equiv \varphi^{\prime} \) and \( \psi \equiv \psi^{\prime} \). Show that (i) \( \neg \varphi \equiv \neg \varphi^{\prime} \) (ii) \( (\varphi \vee \psi) \equiv\l1 answer -
24. Construya una funcion con las siguientes caracteristicas a) Acotada y continua en un intervalo acotado, pero que no es uniformemente continua en el. b) Continua en un conjunto cerrado pero no unif1 answer -
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8. Demuestre que į 1 + cos (0) + ... + cos(ne) I donde no es múltiplo par de . = 1 sen(no +/) 2sen() +
8. Demuestre que \[ 1+\cos (\theta)+\ldots+\cos (n \theta)=\frac{1}{2}+\frac{\operatorname{sen}\left(n \theta+\frac{\theta}{2}\right)}{2 \operatorname{sen}\left(\frac{\theta}{2}\right)} \] donde \( \t1 answer -
Find \( y \) as a function of \( x \) if \[ y^{\prime \prime \prime}-5 y^{\prime \prime}-y^{\prime}+5 y=0 \] \[ y(0)=0, \quad y^{\prime}(0)=-4, \quad y^{\prime \prime}(0)=-24 \]1 answer -
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Demuestre que \[ 1+\cos (\theta)+\ldots+\cos (n \theta)=\frac{1}{2}+\frac{\operatorname{sen}\left(n \theta+\frac{\theta}{2}\right)}{2 \operatorname{sen}\left(\frac{\theta}{2}\right)} \] donde \( \thet1 answer -
Encontrar la representación matricial de A de la transformación
24. \( T: M_{22} \rightarrow M_{22} ; T\left(\begin{array}{ll}a & b \\ c & d\end{array}\right)=\left(\begin{array}{ll}a+b+c+d & a+b+c \\ a+b & a\end{array}\right) \) 25. \( T: P_{2} \rightarrow P_{3}1 answer -
(5) Given the function \( f(x, y)=2 x e^{2 x^{2} y}-3 x^{5} y^{2} \). Find the following: (a) \( f_{x}(x, y) \) (b) \( f_{x}(0, y) \) (c) \( f_{y}(x, y) \) (d) \( f_{y}(0, y) \) (e) \( f_{x x}(x, y) \1 answer -
Given the following matrices, if possible, determine 3A + 4B. If not, state "Not Possible". transcript 9 - 1 -2 ^-B3] -4 -8 A = B = 3 2 6 70-4
Given the following matrices, if possible, determine \( 3 A+4 B \). If not, state "Not Possible". \[ A=\left[\begin{array}{lll} 9 & -1 & -2 \\ 9 & -4 & -8 \end{array}\right] \quad B=\left[\begin{array1 answer -
Transformar la ecuación dada en coordenadas rectangulares \( \mathrm{r}^{2}=2 \cos \theta \) Adjuntar archivo1 answer