1,279 Answered Questions for the topic differential equations

Differential Equations Math Algebra

11/21/18

two step equations word problem
Cookies are on sale! Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80. what was the normal price?i got behind on word problems... more
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Differential Equations

11/18/18

The mean of 7 numbers is 10. Four of the numbers are 8, 5, 7 and −10. The remaining three numbers are each equal to k. Find k
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Differential Equations

11/16/18

Jay weights 20 pounds more than Dan whose weight is twice that of Kirsten's is. Their total weight is 320 pounds. How much does Kirsten weight. I need this in an equation.

I am having trouble understanding how to put it an a equation.
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Differential Equations Math Geometry

11/05/18

Write an equation of the line that passes through point (6, 1) and has the slope m=−3
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Differential Equations

10/25/18

five less than a number is greater than 10
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Differential Equations Linear Algebra

10/19/18

3 Variable System of Equations When All Set to Zero
-5x+4y-2z=0x-2y+z=06x-6y+3z=0,solve for x,y, and z.
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Differential Equations

10/16/18

A checking account is set up with a initial balance $4,800, and $300 is removed from the account each month for rent. How many months will it take for the account balance to reach $1,500?
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Differential Equations Equations

10/15/18

Partial Differentiation

The Function f(x,y)= x^2+y^2+xy+9x has one critical point. Find it and identify it as a local max local min or saddle point
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Differential Equations Calculus

10/12/18

Differentiation Problem
If f and g are differentiable functions for all real values of x such that f(1) = 4, g(1) = 3, f ' (3) = -5, f ' (1) = -4, g ' (1) = -3, g ' (3) = 2, then find h ' (1) if h(x) = f(x) / g(x).
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Differential Equations Calculus

10/11/18

Differential Equation second order using series (reccurrence relation)
(dy^2/d^2x)+(1-x)(dy/dx)-y=0 Initial Conditions y(0)=-1; dy/dx(0)=2I am able to solve the reccurence relation, but Im not sure how to find the values of a0 and a1 using the inital conditions. Can... more
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Differential Equations

10/10/18

(D^2-3D+2)y=sin(e^x)
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Differential Equations

10/09/18

Differentiate the function. h(t) = t^(1/3) − 3e^t
its a differential equation
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Differential Equations Math Math. Differential Equations

08/07/18

Solve ODE with initial conditions
Solve:   dA/dt = -10A A(0) = 5   ---------------------   I tried integrating both sides: dA/-10A = dt int(dA/-10A) = int(dt) -1/10*int(A^-1 dA) = t + c   but I'm not sure what else to do
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Differential Equations

07/23/18

Solve the differential equation (x^2 -1)dy/dx =-(x^2+1)y
Given y=1 when x=3. Express y as a function of x  
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Differential Equations

07/20/18

Solve differential equation : x(3x+2y^2)dx+2y(1+x^2)dy=0
This is to be done with linear equations form. 
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Differential Equations Calculus 2

06/30/18

Determine which function is a solution to the differential equation y ' − y = 0.
a) e^x b) square root of 2x c) x d) none of these
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Differential Equations Calculus Calculus 2

06/30/18

Solve the differential equation
the product of 1/6x and dy/dx equals y times the square root of the quantity 3x squared - 1.
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Differential Equations

06/07/18

differential equations
Hi, can somebody help me to solve these differential equations.   1. Da*(ex+sqrt(a))/sinx   2. D[e2xcos(3x)]   3. D*1/sqrt(1+x2)   4. m(t)= In (t/t0)2   5. du(t)/dt, when u(t)= u... more
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Differential Equations Maths

05/31/18

How to solve exact differential equation?
Hello all!New to this Q&A thing so go easy on me please :) I'm finding difficultly solving this question. Could someone help me find the answer + show all working that would be great :)   dy... more
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Differential Equations

05/27/18

solve [x D^2 +(1-x)D-1]y=e^x
by operational factors
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Differential Equations

05/09/18

The rate of change of y with respect to t is proportional to 50-t.
 solve the differential equation
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04/28/18

Differential Equation Question Please Help.
Solve the following initial-value problem using Laplace transforms.   y''- y' - 2y = 5sin(x) ; y(0) = 1 , y'(0) = -1
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Differential Equations

04/24/18

how to reduce a second order differential equation to bessels equation
Dear expert, kindly suggest how to solve a second order differential equation by transforming it into Bessels' differential equation using a given substitution.   Eg solve: xy''+y'+y/4=0 using... more
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Differential Equations

03/27/18

Differential Equations.
I've been trying to solve this problem for hours.   Find the solution of the differential equation (ln(y))^4  dy/dx=x^4*y which satisfies the initial condition y(1)=e^2 y=?
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Differential Equations Linear Systems Vectors Calculus 3

03/25/18

Differential Equation Question
How would I write this in matrix form (x' = AX)    x' = x y' = y   Note: Is it supposed to be like this: x' = (1 v 1)(x v y) or x' = (1 + 0 v 1 + 0)(x v y)? Note: the "v" means the value after... more
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