1,272 Answered Questions for the topic differential equations

Differential Equations

03/08/23

Calculus problem

Let f,g and h be differentiable at x. If h(x)=f(x)/g(x) +2^x,f'(3)=-8,g'(3)=5,f(3)=-4,g(3)=1,find h'(3)
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Differential Equations

03/07/23

College Math Major looking for help
Currently taking class in differential equations. In the Central Time zone and college athlete. So looking for tutor that can work after 7:00 p.m. CST.
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Differential Equations

03/05/23

Cut a 11’ 9 1/2” wood jnto 4 pieces

If I have a 2x4 wood that is 11’ 9 1/2” I need to cut it into 4 pieces, how long should I cut it?
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Differential Equations

03/05/23

Why is the factoring equation what it is
In something like x^2+4x-5=0 when we get (x+2)in the equation where is the 2 coming from ^
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Differential Equations

02/25/23

how to solve this?
The floor of a shed given on the right has a an area of 119 square feet. The floor is in the shape of a rectangle whose length is 3 feet less than twice the width. Find the length and the width of... more
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Differential Equations Math

02/24/23

Plumber Salaries
What equations must I put together to figure these both out?Juan recently hired a plumber to do some necessary work. On the final bill, Juan was charged a total of $664. $430 was listed for parts... more
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Differential Equations Math Calculus

02/24/23

Find the general solution of the differential equation: (2x-y)dy+(x+y-1)dx=0
Please provide a solution thank you!
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Differential Equations

02/17/23

Differential equations using Newtons law of cooling
An object is placed in a room where the temperature is 20 ◦C. The temperature of the object drops by 3 ◦C in 4 minutes and by 5 ◦C in 8 minutes. What was the temperature of the object when it was... more
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Differential Equations Math

02/14/23

U2.L5.HW: Quadratic Equations: Question 40
A person's systolic blood pressure, which is measured in millimeters of mercury (mm Hg), depends on a person's age, in years. The equation:P = 0.007y² - 0.03y + 118gives a person's blood... more
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Differential Equations Math Calculus Precalculus

02/13/23

Assume that f(x,y,z) = x^2 +y^2 +z^2 +xz has a critical point at (0,0,0). Is f(0,0,0) a maximum, minimum, saddle point, or do we not have enough information to determine this?
Show all of your work and every step to receive full credit. If there is not enough information to determine if (0,0,0) is a max, min, or saddle, please justify your answer.
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Differential Equations Math Calculus Precalculus

02/12/23

Consider the function f(x,y) = x^2 − 2xy + (y^3)/3 −3y
(a) Compute all its critical points.(b) Find Hessian matrices and quadratic forms for each critical point.(c) For each quadratic form, compute the eigenvalues λ1, λ2 of the associated 2 × 2 matrix... more
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Differential Equations Math Algebra 2 Calculus

02/12/23

Let B = [201|020|102] (3x3 matrix)
(a) What does the Spectral Theorem guarantee about the matrix B?(b) Find the eigenvalues and eigenvectors of B.(c) Assume that f(x,y,z) = x2 +y2 +z2 +xz has a critical point at (0,0,0). Is f(0,0,0)... more
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Differential Equations

02/04/23

Differential Equations problem help needed

Classify the values of β for which the characteristic equation has: distinct real roots, repeated real roots, and complex roots.y"-4y'+(4-β)y=0y(0)=1, y'(0)=1
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Differential Equations

01/30/23

Total differential equations
if x = s cos alpha - t sin alpha , y = s sin alpha+t cos alpha Then show that (del^2 u/del x^2)+(del^2u/del y^2) = (del^2u/del s^2)+(del^2u/del t^2)
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Differential Equations

01/28/23

college algebra
A rectangular piece of metal is 15 in longer than it is wide. Squares with in long are cut from the four corners and the flaps are folded upward to form an open box. If the volume of the box is... more
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Differential Equations

01/26/23

Need help. What is the answer? Thank you sir.
Find the solution the following heat equation ∂u/dt = 4 ∂2u/dx2, 0<x<1, t>0 with boundary conditions u(0,t)=0,u(1,t)=0, t>0 and initial condition u(x,0)=x(1-x), 0<x<1Partial... more
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Differential Equations

01/20/23

Given the piecewise continuous funtion
{ e3t, 0≤t<1f(t)= {t-1, 1≤t‹2 { 1, t≥2Express f(t)) in terms step function and find L{f(t)}
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Differential Equations

01/20/23

Find the Laplace transform of the following funtions
f(t)=t(sinh t + cosh t)2
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Differential Equations

01/20/23

Solve the following deifferential equations by using the method of undetermined coefficients
d4y/dx4 - 2 d3y/dx3- 15 d2y/dx2+36 dy/dx=3+36x
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Differential Equations

01/20/23

Use the method of variation of parameters to solve the differential equation
d2y/dx2+9y=cosec2(3x).
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Differential Equations Math

01/18/23

Partial Differential Equations
Please help me sir. Question Partial Differential Equations. Find the solution the following heat equation ∂u/dt = 4 ∂^2u/dx^2, 0<x<1, t>0 with boundary conditions u(0,t)=0, u(1,t)=0,... more
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Differential Equations

01/18/23

Find the inverse Laplace Transform for F(s)=1/ s(s^2+6s+5)
Please help me sir/madam, question : Find the inverse Laplace Transform for F(s)=1/ s(s^2+6s+5)thank you.
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Differential Equations Calculus

01/16/23

Find the equation of the tangent line to the graph
graph of 4y2 + 7x3 = 5x4 - y3 +7y -26 at (3,5)
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Differential Equations Math

01/12/23

HELPPPPPP PLEASEEEEEEEE Are 4x and 15 + x equivalent expressions? Explain why or why not.

I just need the explanation thank you :D
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Differential Equations Math

01/12/23

HELPPPPPP PLEASEEEEEEEE Are 4x and 15 + x equivalent expressions? Explain why or why not.

I just need the explanation thank you :D
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