1,272 Answered Questions for the topic differential equations

Differential Equations Calculus

04/08/20

laplace transformation
A mass weighing 4 pounds is attached to a spring whose constant is 2 lb/ft. The medium offers a damping force that is numerically equal to the instantaneous velocity. The mass is... more
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Differential Equations Calculus

04/08/20

LRC series circuit

Find the charge on the capacitor in an LRC series circuit when L = 0.5 h, R = 10 Ω, C = 0.01 f, E(t) = 150 V, q(0) = 1 C and i (0) = 0 A. What is the charge on the capacitor after a long... more
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Differential Equations Calculus

04/08/20

Differential Equations
A mass of 1 slug, when attached to a spring, stretches it 2 feet and then come to rest in the equilibrium position. Starting at t = 0, an external force equal to(e^-t) (sin 4t) is applied to the... more
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Differential Equations Math Calculus

04/07/20

Hello i need help with this question
When a cubical block of metal is heated, each edge increases by 0.1% per degree increase in temperature. Use differentials to estimate the percentage increase in the surface area and... more
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Differential Equations Ap Calculus

04/03/20

Find the particular solution that satisfies the initial condition
sqrt(x) + sqrt(yy’) = 0 y(1)=4
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Differential Equations Calculus

04/01/20

State the form for the particular solution of the differential equation y''-3y'+2y=sin(3x)
State the form for the particular solution of the differential equation y''-3y'+2y=sin(3x). Do not solve for any of the variables.
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Differential Equations Calculus

04/01/20

differential equation word problem

A tank contains 1000 L of brine (salt water) with 15 kg of dissolved salt. Pure water enters the tank at a rate of 10 L/min. The solution is kept throughly mixed and drains from the tank at the... more
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Differential Equations

03/31/20

Solve the System of Differential Equations
Solve the system:dx/dt = -4y+e^-tdy/dt=9x-e^-tI wish I could provide more info but my problem is that I'm not sure what method I need to use for this. This is from a study guide for my class that... more
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Differential Equations

03/21/20

Write the verbal sentence as an equation

-8 is 5 less than a number
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Differential Equations

03/15/20

Help solving a 1st order ODE for internal energy change
The question is the following:You would like to have a cup of tea, so you need to heat up water. In this exercise, you do that by putting water (0.5 liter) in a cooker that is electrically heating... more
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Differential Equations

03/08/20

equations in 7th grade math
One of two supplementary angles is 112 degrees. Let x = the measure of the other supplementary angle. Write and solve an equation to find the measure of angle x.
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Differential Equations

03/04/20

what is the some of the two numbers is 11 and their is 5
what is the some of of the two numbers is 11 and their difference is 5
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Differential Equations

03/02/20

differential equation
Find the value of a for which the polynomial x^5-ax²-ax+1has −1 as a root with multiplicity at least 2.
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Differential Equations

03/02/20

The measure of the angle supplement is 10° more than five times that if it’s complement find the measure of the angle described
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Differential Equations

03/01/20

mathematics differential equation
1. Show that if z is abse nt from the e quation F (x, y, z, p, q)= 0,Charpit's method coincides with Jacobi's method. 2. how how to solve, by Jacobi's method, a partial differential equation of the... more
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Differential Equations Equations

02/26/20

Equation with two variables
90y+55x=9545and x+y=115what is x & y??
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Differential Equations

02/26/20

Which equation is equivalent to 3x-4y=8
A. Y=3/4x+2B. Y=-3/4x+2C. Y=-3/4x-2D. Y=3/4x-2
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Differential Equations Mathematics

02/26/20

What is 4 times a number is twelve less than twice the number, as an equation

This has stumped me in every way possible, please help me find this equation, if you do thank you soooooo... more
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Differential Equations Applied Maths

02/25/20

How to integrate this differential equation? Applied Maths
dN/dt = aN + bN2(Where N is variable, a and b are constants)N(0) = N0This is what Im supposed to get:N(t) = (aN0) / ((a-bN0)e-at+bN0)I tried completing the square and a lot of other ways and I just... more
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Differential Equations

02/24/20

Answer each rational equation
36x4-13x2+1=0
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Differential Equations

02/20/20

Orthogonal trajectories

Find the orthogonal trajectories to the family of hyperbolas x2-y2=c
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Differential Equations Lower Order Differention Equation

02/15/20

lower order differential equation
how to solve the differention equation 4d4-8d3-7d2+11d+6please tell me that how i will obtain the complete solution ofthis differention equation
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Differential Equations

02/13/20

Interpret the initial value problem
Interpret the initial value problem d2θ/dt2+ß2θ=0, θ(0)=θ0 , dθ/dt]t=0=ω0for any physical situation and hence solve the problem.
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Differential Equations

02/13/20

Solve the differential equations
Solve the differential equations: Xy'–y=ey'
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Differential Equations

02/11/20

When will you and your friend meet?
You are traveling 75 miles per hour and your friend is traveling 40 miles per hour. However your friend has a 25 mile an hour head start. If you both have about 200 miles to travel when will you... more
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