Advanced Math Archive: Questions from April 02, 2023
-
2 answers
-
Prove that if \( f(x, y) \) satisfies Laplace's equation \[ \frac{\partial^{2} f}{\partial x^{2}}+\frac{\partial^{2} f}{\partial y^{2}}=0, \] so does \( \phi(x, y)=f\left(\frac{x}{x^{2}+y^{2}}, \frac{2 answers -
Consider the open sentence \( P(n) \) below: \[ P(n): \sum_{i=0}^{n} i=\frac{n(n+1)}{2} \] What is \( P(k+1) \) ? \[ \begin{array}{l} P(k+1): \sum_{i=0}^{n}(k+1)=\frac{(k+1)(k+2)}{2} \\ P(k+1): \sum_{2 answers -
6. Calcule la probabilidad de que una muier tenga un largo del brazo derecho entre 21 y 25 Demuestre manualmente paso a paso. a. Calcule el valor de \( Z \). b. Realice el dibujo de la distribución n2 answers -
2 answers
-
2. \( y^{\prime \prime}+2 y^{\prime}+2 y=h(t) ; \quad y(0)=0, \quad y^{\prime}(0)=1 ; \quad h(t)=\left\{\begin{array}{ll}1, & \pi \leq t2 answers -
9. \( y^{\prime \prime}+y=g(t) ; \quad y(0)=0, \quad y^{\prime}(0)=1 ; \quad g(t)=\left\{\begin{array}{ll}t / 2, & 0 \leq t2 answers -
1. Find \( \frac{d y}{d x} \) for the following: a) \( 6 x^{4} e^{x} \) b) \( y=x^{3} \cos (x) \) c) \( y=3 x^{6} \sin (5 x) \) d) \( y=12 \ln (7 x) \) e) \( y=\frac{\cos (x)}{x^{4}} \) f) \( y=\frac{2 answers -
Solve IVP \( \frac{\mathrm{d}^{2} \chi}{\mathrm{dt}^{2}}+9 x=5 \sin (3 \mathrm{t}), \chi(0)=2, x^{\prime}(0)=0 \)2 answers -
0 answers
-
differential equations chapter 4 we need to set setup yp
Q1. \( \quad(D-2)^{3}\left(D^{2}+9\right) y=x^{2} e^{2 x}+x \sin (3 x) \) Q2. \( \quad y^{\prime \prime}-2 y^{\prime}+2 y=e^{x} \sin x \) Q3 \( \quad y^{(5)}-y^{(3)}=e^{x}+2 x^{2}-5 \) Q4 \( \quad y^{2 answers -
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
Solve Laplace's equation, \( \frac{\partial^{-} u}{\partial x^{2}}+\frac{\partial^{-} u}{\partial y^{2}}=0,02 answers -
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
0 answers
-
1 answer
-
Calculate \( \iint_{\mathcal{S}} f(x, y, z) d S \) For Part of the surface \( x=z^{3} \), where \( 0 \leq x, y \leq 2^{-\frac{3}{2}} ; \quad f(x, y, z)=x \) \( \iint_{\mathcal{S}} f(x, y, z) d S= \)2 answers -
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
1 answer
-
1 answer
-
1 answer
-
0 answers
-
0 answers
-
1 answer