773 Answered Questions for the topic differential equations

Differential Equations Calculus Precalculus Computer Programming

5d

#### Evaluate the sum using the summation formulas and properties.

12 (j3 - 3j2) j = 1= ______
Differential Equations Calculus Precalculus Integral Calculus

7d

#### y' + y tan x + 1 = 0

Help me answer this differential equation. Thank you.
Differential Equations

7d

#### Given that dy/dx = 9y² - 4 and that y = 1 when x = 2. Find an equation expressing x in term of y.

Differential Equations Algebra 1 Algebra 2 Calculus

7d

#### Calculus question related to vectors need help!

Part of a cross-country skier's path can be described with the vector function r = <2 + 6t + 2 cos(t), (15 − t)(1 − sin(t))> for 0 ≤ t ≤ 15 minutes, with x and y measured in meters. The... more
Differential Equations

8d

#### If dy/dx=1/t find d^2y/dx^2

If x=at^2 ,y=2at, find dy/dx and d^2y/dx^2 in terms of t
Differential Equations

16d

#### General and particular solution

Show complete solution and use equation function.1. Find the general solution of xdx = 9x²dx- ydy.2. Find the general solution to the equation (cos y + 2) dy/dx = 2x.
Differential Equations

19d

#### Find the derivative of the function x=1/2t^4-5t-3

Find the derivative of the function x=1/2t^4-5t-3 USING THE LONG METHOD
Differential Equations

19d

#### find the derivative of y=u^6-2u^3+5/u^2

Find the derivative of y=u^6-2u^3+5/u^2
Differential Equations

20d

#### Find the order and degree of Ry" =[1+(y')^2]^3/2

Differential Equations

21d

#### Find the first derivative of z=x^3-xy^2+3y^2

Differential Equations

23d

#### Graph the line that passes through the points ( 2 , 5 ) and ( − 1 , − 4 ) and determine the equation of the line.

Differential Equations Calculus Precalculus Computer Programming

25d

#### For the function shown below, find each of the following limits. (If an answer does not exist, enter DNE.)

f(x) = 7x, x ≤ 0 x2 + 9, x > 0'(a) lim f(x) = _____ x→0−(b) lim f(x) = _____ x→0+(c) lim f(x) = _____ x→0
Differential Equations Math Calculus Sat Math

27d

#### Differentiation

A woman at a point A on the shore of a circular lake with radius r=4 wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can... more
Differential Equations Math Calculus Sat Math

27d

#### Applications of Differentiation

Consider the function f(x)= 2sin(x) + [(sqrt3)/2] x2 This function has two inflection numbers A<B in [0,2pi]:A= and B= For each of the following intervals, tell whether f(x) is concave... more
Differential Equations Math Calculus Sat Math

27d

#### Applications of Differentiation

Consider the function f(x)= cos(x) - (1/2)x.  This function has two critical numbers  A<B in [0,2pi]. Give the following:    A=B=f''(A)=f''(B)=
Differential Equations

27d

#### solve the differential equation

dy/dx= (x+y+3)/(2x+2y+1)
Differential Equations Math Calculus Mathematics

28d

#### Applications of Differentiation

The revenue from selling q items is R(q) = 550q-q^2 , and the total cost is C(q) = 175+6q. Write a function that gives the total profit earned, and find the quantity which maximizes the... more
Differential Equations Math Calculus Mathematics

28d

#### Applications of Differentiation

Consider the function f(x)=x^(9) e^(9x) , -2<= x <=1.The absolute maximum value is =and this occurs at x equals =The absolute minimum value is = and this occurs at x equals =
Differential Equations Math Calculus Mathematics

28d

#### Applications of Differentiation

Find the absolute maximum and minimum values of the following function on the given interval. If there are multiple points in a single category list the points in increasing order in x value and... more
Differential Equations Math Calculus Mathematics

28d

#### Applications of Differentiation

Consider the function f(x)= 2x^3 - 6x^2 - 48x + 7 on the interval [-4,8]. Find the average or mean slope of the function on this interval. Average slope: 24 By the Mean Value Theorem, we know there... more
Differential Equations Calculus Precalculus Statistics

05/15/21

#### Use the graph of the function f to decide whether the value of the given quantity exists. If it does, find it. (If an answer does not exist, enter DNE.)

(a)    f(0) = ______(b)    lim f(x) = ______ x→0 (c)    f(3) = ________(d)    lim f(x) = _______  x→3

05/14/21

#### As we have seen, a solution of t2y''+6ty′+4y=28t3+8 can be found by writing yp=u1y1+u2y2 ​as done in lecture. Find u1u1​.

As we have seen, a solution of t2y''+6ty′+4y=28t3+8 can be found by writing yp=u1y1+u2y2 ​as done in lecture. Find u1u1​.−4t7/3−2t4/34t7/3+2t4/34t7/3+2t4/3−7t4/3−8t/3
Differential Equations

05/12/21

#### solve the equation

2x+3=15what is the value of xA 15B 12C 6D 2
Differential Equations Calculus

05/08/21

#### Solve differential equations by using integrating factors

(dr/dθ)+rcotθ=sinθ y+x(x-1)(dy/dx)=x3e-x^2 x(dy/dx)=y+x2(sin+xcosx) and y = 0 when x = π/2 dy/dx = x - xy and y = 0 when x = 0
Differential Equations Calculus

05/08/21

#### Solve Differentational equations using integrating factors.

tanx (dy/dx)+y=extanx dv/dt=t-2vt x(dy/dx)+2y=(sinx)/x x(dy/dx)=y-x2e-x

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