Transcription of 20D - Homework Assignment 1 - UCSD Mathematics
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Brian Bowers (TA for Hui Sun)MATH 20 DHomework Assignment 1 October 7, 201320D - Homework Assignment #1,2,3,4,6 Solve the given differential equation.(1)y =x2/y(2)y =x2/y(1 +x3)(3)y +y2sinx= 0(4)y = (3x2 1)/(3 + 2y)(6)xy = (1 y2)1/2 All of the equations in this set are separable, so our goal should be to get the terms involvingyon theleft side and the terms involvingxon the right side. I will rewritey asdy/dxfor these problems.(1)We separate and then integrate:dydx=x2/y= ydy=x2dx[separating variables]= y22=x33+C[integrating]= y= 2x33+C[solving fory](2)We separate and then integrate:dydx=x2/y(1 +x3)= ydy=x21 +x3dx[separating variables]= y22=13ln|1 +x3|+C[integrating]= y= 23ln|1 +x3|+C[solving fory](3)We separate and then integrate:dydx= y2sinx= dyy2= sinxdx[separating variables]= 1y= cosx+C[integrating]= y= 1cosx+C[solving fory]1(4)We separate and th
(6) xy0= (1 y2)1=2 All of the equations in this set are separable, so our goal should be to get the terms involving yon the left side and the terms involving xon the right side.
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Exercises in Digital Signal Processing 1, Exercises in Digital Signal Processing, Chapter 1 Solutions to Review Problems, CHAPTER 1. SOLUTIONS TO REVIEW PROBLEMS, Cubic Spline Approximation Problem, SOLUTION FOR HOMEWORK 5, STAT 4351, Examples: Joint Densities and Joint Mass Functions, 1-0, Joint Personnel Support, Solutions to Exam 1, MATH 304 Linear Algebra, 0 1 1