Mathematics
Mathematics, 19.07.2019 19:20, fredgk

describe in about 200 words, uses of differential equations in real life.
topic: how differential equations can of model the rate at which ice is melting in the arctic

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Mathematics, 27.06.2019 21:00, jr8297811
It can be to classify a differential equation, so that we can predict the techniques that might us to find a function which solves the equation. two classifications are the order of the equation -- (what is the highest number of derivatives involved) and whether or not the equation is linear .linearity is important because the structure of the the family of solutions to a linear equation is fairly simple. linear equations can usually be solved completely and explicitly. determine whether or not each equation is linear: 1. (1+y2)(d2y/dt2)+t(dy/dt)+y=et2. t2(d2y/dt2)+t(dy/dt)+2y=sin t3. (d3y/dt3)+t(dy/dt)+(cos2(t))y=t34. y''-y+y2=0you have 10 choices to choose for each problem: a. 1st. order linear differential equationb. 2nd. order linear differential equationc. 3rd. order linear differential equationd. 4th. order linear differential equatione. 5th. order linear differential equationf. 1st. order non-linear differential equationg. 2nd. order non-linear differential equationh. 3rd. order non-linear differential equationi. 4th. order non-linear differential equationf. 5th. order non-linear differential equation
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Mathematics, 03.07.2019 21:20, Ajaxr2432
Show all work for full credit! 4 problems- 25 points each with an initial velocity of 5 meters/sec and moves with acceleration a() aot.lt0.75 where ao is a constant for 45 seconds and then lifts off the end of the runway. how fast was the plane traveling (in meters/sec) on lift off? model and solve using differential equations. show all differential equations and all work. find the general solution (implicit if necessary, explicit if convenient) for the following: 2 (2 +x) 2 dx = (2 + y)2 3 verify that the differential equation is exact, then solve it. (6x-y)dx = (x-4y)dy 4 use the integrating factor explained on page 47 to solve the following: cy-ay = b + be-2ax where a b,a, b, c are constants. solve the differential equation.
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Mathematics, 13.07.2019 21:10, kyao3393
Solve the following system of equations using an augmented matrix and elementary row operations (this technique will be used in solving systems of differential equations, chapter 8, as well as second order differential equations, chapter 4). a calculator solution will receive no credit. 2x_1 + 4x_2 - 10x_3 = -2 3x_1 + 9x_2 - 21x_3 = 0 x_1 + 5x_2 - 12x_3 = 1
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Physics, 05.10.2019 00:00, srichard9955
Differential equations. make your work clear! note parts c and d, might require you to do some short research or read the review packet a) without referring to your notes, describe what a differential equation in your own words. when would you differential equations be used in physics? the key is not to write down the correct answer but for vou to have your own definition and refine it accordingly. points will be deducted if responses are copied from any resource, and full credit is awarded otherwise b) you are pouring a solution of your favorite drink containing a (where a is a constant) lb/gal into a large tank at a rate of r gal/min. the tank initially has b gal of pure water. assume that the tank has stirrers inside and has a hole on the bottom that drains liquid at the same rate r. let q be the concentration inside the tank. write a differential modeling the situation (hint: try drawing this out, how would you define? ) dq dt dr2 c) solve the differential equation.w0, x(0)-0 (hint, what function(s) exists where the second derivative of the function is equal to the negative of itself.) dar dt d) solve the differential equation. _-x 0, x(0)-0
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topic: how differen...

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