1,272 Answered Questions for the topic differential equations

Differential Equations Calculus Geometry Linear Algebra

11/15/22

Linear Approximation estimate
Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.02 cm thick to a hemispherical dome with a diameter of 40 meters.I don't understand... more
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Differential Equations Math Calculus Geometry

11/15/22

Differentials Problem Determining Grams
Let f(t) be the weight (in grams) of a solid sitting in a beaker of water. Suppose that the solid dissolves in such a way that the rate of change (in grams/minute) of the weight of the solid at any... more
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Differential Equations Calculus

11/15/22

Differentials Question Invovling Square Root

I don't really understand this one, been trying for this game but cannot understand it that well.Let y = 4√x.Find the change in y, yΔ when x = 2 and Δx = 0.1Find the differential dy when x =... more
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Differential Equations

11/15/22

Quadratic equation
An arrow is shot vertically upward from a platform 30ft30⁢ft high at a rate of 157ft/sec157⁢ft/sec. When will the arrow hit the ground? Use the formula: h=−16t2+v0t+h0h=−16t2+v0t+h0. (Round your... more
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Differential Equations

11/15/22

The sum of a number and two is twice the number.
The sum of a number and two is twice the number.
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Differential Equations

11/14/22

Extremely lost please help: The width of a rectangle is 2 less than twice its length. If the area of the rectangle is 88 cm 2 cm 2 , what is the length of the diagonal?
The width of a rectangle is 2 less than twice its length. If the area of the rectangle is 88 cm2cm2, what is the length of the diagonal?The length of the diagonal is   cm.Give your answer to 2... more
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Differential Equations Calculus Linear Algebra Mathematica

11/08/22

Differential Equations- find the general solution(linear equation of order n)
1. (D3 − 3D2 − 10D) y = 02. (D3 − 3D2 − 4D − 12) y = 03. d3x/dt3+d2x/dt2-2dx/dt = 04. d3x/dt2-19dx/dt+30 = 05. (4D3 − 21D − 10 ) y = 0 6. (D3 − 14D + 8) y= 0 7. (D3 − D2 − 4D− 2) y = 0 8. (4D4 −... more
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Differential Equations

11/07/22

A box with an open top is to be constructed from a square piece of cardboard, 3 ft wide, by cutting out a square from each four corners. write an equation that relates the volume of variables x and y.
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Differential Equations Calculus Physics

11/07/22

Find the equation of motion of a force of a spring
A spring with a spring constant k of 20 pounds per foot is loaded with a 10-pound weight and allowed to reach equilibrium. It is then displaced 1 foot downward and released. If the weight... more
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Differential Equations

11/05/22

find the width and the length
The area of a rectangle is 33 ft2, and the length of the rectangle is 5 ft less than twice the width. Find the dimensions of the rectangle.
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Differential Equations

11/04/22

Equations in word problems
Two more than four times a number is equal to two added to quadruple the number
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Differential Equations

11/03/22

(2𝑥𝑦 𝑑𝑥+ 𝑑𝑦)𝑒𝑥2=0 𝑦(0)=2
solve this exact equation
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Differential Equations

11/02/22

Math problem quantity with price
How do I calculate if 1 gal of gas costs 3.49 how much would it cost to buy 1.86 gallons?
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Differential Equations Calculus

10/31/22

Find the most general solution to the non-homogeneous equation.
Find the most general solution to the non-homogeneous equation:y" - 16y' + 64y = (e-8x) / (1+x2)With the given conditions: y(0) = -10 and y'(0) = 9I partially solved it, withy = e8x ∫0x ((-te-16t)... more
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Differential Equations Calculus

10/31/22

Find the most general solution to the non-homogeneous equation.
Find the most general solution to the non-homogeneous equation:y" - 16y' + 64y = (e-8x) / (1+x2)I partially solved it, withy = e8x ∫0x ((-te-16t) / (1+t2))dt + xe8x ∫0x ((e(-16t)) / (1+t2))dt +... more
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Differential Equations Calculus

10/31/22

Find a particular solution to the nonhomogeneous differential equation.
Find a particular solution to the nonhomogeneous differential equation:y" + 16y = sec(4x)I know that the most general solution to the associated homogeneous differential equation is C1sin(4x) +... more
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Differential Equations

10/31/22

a rectangular picture measures 10 inches by 15 inches. it is put in a frame with a uniform width. if the area of ths picture is equal to the area of the frame what is the width of the frame?
I need a solution please.
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Differential Equations

10/28/22

Math work problem

Suppose a certain company sells regular keyboards for $82 and a wireless keyboard for 110 last week the store sold three times as many regular keyboard is wireless if total keyboard cells were 5340... more
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Differential Equations

10/25/22

y=Acos2x + Bsin4x

How to eliminate the arbitrary constant a and b
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Differential Equations Math

10/23/22

Solve by inspection...

( x3+ x y2 +y ) d x + ( y3 + x2 y + x ) d y = 0 x4 y' = -x3 y - csc(xy)
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Differential Equations Math Calculus

10/23/22

Differential Equation
a) Let y‴−10y″+21y′=0. Find all values of r such that y=erx satisfies the differential equation. If there is more than one correct answer, enter your answers as a comma separated list. b)... more
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Differential Equations

10/18/22

Quadratic equation
write a quadratic equations whose roots are 3 and negative 1 and whose leading coefficient is 5
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Differential Equations

10/16/22

How many boys are there in an introductory

How many boys are there in an introductory Chinese course if 396 students are enrolled and there are five boys to every seven girls?
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Differential Equations

10/14/22

Use differentials and the graph of g' to approximate g(2.99) and g(3.2) given that g(3) = 3. g(2.99) ≈ 3.01 Correct: Your answer is correct. g(3.2) ≈ 2.99 Incorrect: Your answer is incorrect.
Use differentials and the graph of g' to approximate g(2.99) and g(3.2) given that g(3) = 3.g(2.99) ≈  g(3.2)=
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Differential Equations

10/13/22

I need a solution for this equation : y'-y^2 +2e^x y=e^2x +e^x
thanks for support
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