Advanced Math Archive: Questions from April 19, 2023
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4. [30 pts] Solve the following partial differential equation: (a) \( [y+u(x, y)] u_{x}(x, y)+y u_{y}(x, y)=x-y, \quad u(x, 1)=1+x, \quad-\infty2 answers -
2.- Dada la siguiente tabla de valores de la función \( f(x)=\sqrt{18} \cos \left(x-\frac{\pi}{2}\right) \) tomados en el intervalo \( [2,4] \), encontrar el conjunto de polinomios de ajuste por spli2 answers -
3.- Dada la siguiente tabla de valores de la función \( f(x)=\frac{3}{\sqrt{x^{3}+5}} \) tomados en el intervalo \( [0,3] \), encontrar el conjunto de polinomios de ajuste por spline cúbico \( s(x)0 answers -
Solve the following second order linear ODEs: (i) \( y^{\prime \prime}-9 y=0 \) (ii) \( 4 y^{\prime \prime}+20 y^{\prime}+25 y=0 \) (iii) \( \left(D^{2}+3 D-5\right) y=0 \) (iv) \( y^{\prime \prime}-42 answers -
Al usar el método de Bernoulli para la ecuación \( \frac{d y}{d x}=\frac{2 y}{x}-x^{2} y^{2} \) la reduce a la ecuación \[ -\frac{d v}{d x}+\frac{2}{x} v=-x^{2} \] True False AB Cick submin tid com2 answers -
Determine \( \frac{d y}{d x} \) of the following and simplify if possible: 3.1 \( y=\frac{2 \sin x}{1-\cos x} \) 3.2 \( y=\frac{1}{x}-\cos ^{2}(3 x) \) \( 3.3 y=\sqrt{x} e^{\left(x^{2}+2\right)} \) 3.2 answers -
Determine \( \frac{d y}{d x} \) of the following and simplify if possible: 3.1 \( y=\frac{2 \sin x}{1-\cos x} \) 3.2 \( y=\frac{1}{x}-\cos ^{2}(3 x) \) 3.3 \( y=\sqrt{x} e^{\left(x^{2}+2\right)} \) 3.2 answers -
\( \begin{array}{l}=\left(\frac{r_{i}}{r_{1}}\right)^{4}=\frac{\sin (\theta)}{\tan (\theta)} \\ =\left(\frac{r_{2}}{r_{1}}\right)^{4}=\cos (\theta) \\ =\theta_{\min }=\cos ^{-1}\left(\left(\frac{r_{2}0 answers -
Encuentre la solución general de la ecuación diferencial \( \frac{d^{5} t}{d s^{5}}+5 \frac{d^{4} t}{d s^{4}}-2 \frac{d^{3} t}{d s^{3}}-10 \frac{d^{2} t}{d s^{2}}+\frac{d t}{d s}+5 t=0 \) \[ t=c_{1}2 answers -
Let \( \mathbf{F}(x, y, z)=\left(x^{2}+z\right) \mathbf{i}-2 x y \mathbf{j}+y z^{2} \mathbf{k} \). Calculate 1. \( \nabla \cdot \mathbf{F} \cdot(6 \mathrm{pts}) \) 2. \( \nabla \times \mathbf{F} .(9 \2 answers -
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Considera un anillo de radio 0.5 metros con carga \( \mathrm{q}=3 \times 10^{-9} \mathrm{C} \), suponga que se tiene una carga \( Q=-3 \mathrm{C} \) colocada en el eje del anillo \( \mathrm{a} \) una2 answers -
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Anlicaciones de Ecuaciones Exponenciales y Logaritmicas 1. La población de la Tierra al inicio de 2006 era de 4 mil millones y ha crecido a una tasa anual de \( 2 \% \). ¿Cuád será la población e2 answers -
Simplify \( \sin 4 \theta= \) A. \( 4 \cos ^{2} \theta \sin \theta-4 \sin ^{2} \theta \cos ^{3} \theta \) B. \( 4 \cos ^{3} \theta \sin \theta-4 \sin ^{3} \theta \cos \theta \) C. \( \cos \theta \sin2 answers -
\( \begin{array}{c}c=x+2 y+3 z \text { subject } \\ \begin{array}{c}3 x+2 y+z \geq 80 \\ 2 x+y+3 z \geq 80 \\ x \geq 0, y \geq 0, z \geq 0\end{array}\end{array} \)2 answers -
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3. Find the general solution. (a) \( y^{\prime \prime \prime}-y^{\prime \prime}-6 y^{\prime}+6 y=0 \) (b) \( y^{(6)}-64 y=0 \)2 answers -
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EJERCICIO 2. Calcule \( T_{\Omega} h[z] \), siendo \( h(z)=z^{2} \). EJERCICIO 2. Calcule \( T_{\Omega} h[z] \), siendo \( h(z)=z^{2} \).2 answers -
ABDC es un trapezoide. \( \overline{A B}=2.5, y \), \( \overline{E F}=4.5 \). . Cuál es la longitud de \( \overline{C D}_{\text {o }} \)2 answers -
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Encuentre el intervalo de convergencia para la siguiente serie de potencias.?[n=1,?,(x^n)/2^n(?(n))]1 answer
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7. Determine all singular points of the given differential equations: a. \[ (1-\ln x) y^{\prime \prime}+\left(x^{2}+1\right) y^{\prime}-(\sinh x) y=0 . \] b. \[ \left(x^{2}-6 x\right) y^{\prime \prime2 answers -
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