### Differential Equations with Linear Algebra

The following sequence of Mathematica commands generates the slope field and the solution curves through the given points. The original curve shown in Fig. Numerical solution techniques are discussed in Sections2. The coordinates of the 12 points are marked in Fig. For instancethe 7th point is —2. The curve in the figure on the left below can be constructed using the commands illustrated in Problem 1 above.

Introduction to Linear Differential Equations and Integrating Factors (Differential Equations 15)

And its pretty clear that the limiting population is 75 deer. Looking at the figure on the left below, we see that we can start at the point a , b and follow a branch of a cubic up or down to the x-axis, then follow the x-axis an arbitrary distance before branching off down or up on another cubic. Looking at the figure on the right above, we see that we can piece together a "left half" of a quartic for x negative, an interval along the x-axis, and a "right half" of a quartic curve for x positive.

The general concept of natural growth and decay is important for alldifferential equations students, but the particular applications in this section are optional. Torricellis law in the form of Equation 24 in the text leads to some nice concrete examples andproblems.

Observe that y x is always nonnegative, consistent with both the square root and the original differential equation. This explains the plotted general solution curves we see in the figure at the top of the next page. Hence we need only solve the equation 4. Thus it appears not to be a genuine relic of the time of Christ years ago.

### Differential Equations with Linear Algebra

Thus the body was formed approximately 4. Thus the age of the rock is about 1. Let N 8 t and N 5 t be the numbers of U and U atoms, respectively, at time t in billions of years after the creation of the universe.

We divide the equations for N 8 and N 5 and find that when t has the value corresponding to "now", Section 1. Thus we get an estimate of about 6 billion years for the age of the universe. The radius of the cross-section of the cone at height y is proportional to y, so A y is proportional to y2. It therefore takes about 6 min 3 sec for the fluid to drain completely. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips.

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Cancel Save. Thread starter jwxie Start date Jun 5, Linear Algebra and Vector Analysis for Engineers Matrix theory, linear equations, Gauss elimination, determinants, eigenvalue problems and first order systems of ordinary differential equations, vector field theory, theorems of Green, Stokes, and Gauss.

## Linear Algebra and Differential Equations (NSC) - Griffith University

First order equations; higher order linear equations with constant coefficients, undetermined coefficients, variation of parameters, applications; Euler's equation, series solutions, special functions; linear systems; elementary partial differential equations and separation of variables; Fourier series. Related General Math News on Phys. If I were to give an opinion on which one were more "fundamental", then I'd say the linear algebra one. And that would certainly be the more useful subject to know depending of course on what you intend to go on and do.

Methods of solving differential equations tend to be just that: a list of different methods which work in different cases. Although being able to solve differential equations is essential for a physicist, engineer etc, it won't help in any area other than differential equations.

## MATH 2082 - Linear Algebra and Differential Equations

Vector spaces. Oct 15, Dimension of a vector space.

Applications of linear algebra to differential equations. Oct 22, The theory of determinants. Solutions of simultaneous linear equations. Oct 29, Linear transformations. The eigenvalue-eigenvector method of finding solutions. Nov 5, 7. Complex roots. Equal roots. 