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Differential Equations

Mixed approximation vs. full approximation for a power series expansion
6.8K threads
Undergrad Mixed approximation vs. full approximation for a power series expansion
A hard integral gives a simple closed form, π/(4a)^3
  • Tony1
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Spherical coordinates and triple integrals
  • Rorschach
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Undergrad Area between two closed curves
  • SSGD
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Change of variables/ Transformations
  • Joe20
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3
How to Integrate 1/(1+e cos(x))^2?
  • Dustinsfl
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Determine an expression using binomial theorem
  • Ernie1
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Undergrad I want to see how d/dt (-mu/r) = mu/r^2 * v
  • AdrianGriff
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Graduate How to make this integral (which does not converge) be finite?
  • Emmanuel Ortiz
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[ASK] Integral - Draining a Pipe
  • bleedpurple
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Undergrad Why tan x=x as x approaches 0?
  • rishi kesh
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19
Differential forms - Reference request
  • Joppy
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[ASK] Tangent of a Circle (Again)
  • Monoxdifly
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Undergrad Improper Integrals - Are They Really Integrals?
  • FS98
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Undergrad "Imagine" a definite integral with a finite number of discontinuties
  • dRic2
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11
Undergrad Improper Integrals: Definite & Indefinite | Bounds -1 to 1
  • FS98
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4
Angular speed of 2 pulleys on a belt
  • RobertoPink
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2
Undergrad Deriving a function from within an integral with a known solution
  • Phylosopher
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Undergrad Partial derivatives in thermodynamics
  • anachin6000
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2
Undergrad Proving the Linear Transformation definition
  • Aleoa
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13
Undergrad Integrating a Function over a Torus Contour
  • aheight
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19
Evaluate the definite integral x/√(e^x+(2+x)^2)
  • lfdahl
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Undergrad What are differentials and how are they used in calculus and physics?
  • FS98
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5
Graduate Confusion about the "now-you-see-me-now-you-don't" radian
  • BP Leonard
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8
Undergrad What do Stokes' and Green's theorems represent?
  • NicolaiTheDane
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7
Undergrad Quick question about linearization using the small angle method
  • Jayalk97
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Undergrad Conformal Mapping Wedge to Plate
  • member 428835
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3
A torsional pendulum - determine angular speed
  • HelpMePls2
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2
Drawing Level Curves: Solving K=0 Problem
  • Yankel
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2
What is the Domain of the Function t^(-1) + 2t^(-2)?
  • mathdad
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1
What is the area of the region bounded by the given curves and lines?
  • Monoxdifly
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5
How Fast Does the X-Coordinate Move on a Complex Graph Curve?
  • marshmallow1
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4
Undergrad What Steps Are Needed to Solve This Integral Problem?
  • EngWiPy
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4
(Integration) Find volume using disk method when rotated about the X-axis
  • DarK1
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Find the Area of x^2+2x-3 Region
  • Monoxdifly
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2
High School What is the function rule for f(x,y) in terms of s and t?
  • beaf123
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5
How Fast Does a Balloon's Radius Expand When Inflated?
  • Monoxdifly
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6
Understanding Integral Substitution: Finding Equivalent Ranges for Functions
  • TheFallen018
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12
How can substitution make solving integrals easier?
  • TheFallen018
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1
Undergrad Fourier series of Dirac comb, complex VS real approaches
  • DoobleD
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9
Where is the Vertical Asymptote of f(x) = (5 - x^2)/(x - 3)?
  • mathdad
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What are the steps to finding an oblique asymptote for a rational function?
  • mathdad
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8
What Are the Steps to Find the Horizontal Asymptote of f(x) = (x^2 - 9)/(x - 3)?
  • mathdad
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Evaluating Trigonometric Expressions
  • mathdad
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10
What are the steps for finding asymptotes of rational functions?
  • mathdad
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2
Tail Behaviour of WIdom-Tracy distribution.
  • Alone
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Undergrad Does a set and a field together always generate a vector space?
  • kent davidge
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28
What is the integral of 2^(2x)? tonight, exam is tomorrow
  • mathnoob12345
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Undergrad What does normalizing a straight line mean?
  • Sayed
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2
High School How can I show the sum results in this?
  • howabout1337
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16.1.9 Line Integral over space curves
  • karush
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Vertical / Horizontal Displacements
  • JJKD
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1
Undergrad Convergence of a recursively defined sequence
  • Mr Davis 97
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18
Graduate Integrate f(x) = tanh(c*x^b)? Wolfram says not possible ....
  • mikejm
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High School Quotient Limit Law: Find the Value of the Limit
  • FS98
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2
Undergrad What is the meaning of dx and how does it relate to dy/dx?
  • FS98
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11
Undergrad Why do we use ∂ in partial differentiation for multiple variables?
  • Voq
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6
232.5a Evaluate the double integral
  • karush
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5
232.15.1.33 Evaluate the Area of the Region
  • karush
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What is the Area of the Region Bounded by y=0, y=2x+4, and y=x^3?
  • karush
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4
Maclaurin Limit of lnx: \frac{1}{2}
  • ToastIQ
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2
Angular and Linear Speed....Part 2
  • mathdad
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6
What is the maximum area of the circular sector with a perimeter of 12 cm?
  • mathdad
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213.15.4.17 triple integral of bounded by cone and sphere
  • karush
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Multivariable calculus line integral work
  • kenporock
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Integral Applications - Hydrostatic Pressure + Force
  • MermaidWonders
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25
Multivariable conservative field
  • kenporock
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1
Find the infinite sum of fractions 2/(3⋅5)+(2⋅4)/(3⋅5⋅7)+(2⋅4⋅6)/(3⋅5⋅7⋅9)+....
  • lfdahl
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8
How to calculate this type of integral, Thanks
  • zhaojx84
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Undergrad Showing relationship between zeta and gamma
  • howabout1337
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7
Graduate How do we go from BVP to IVP in determining the Green's function?
  • member 428835
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Find s, the arc length of a circle
  • mathdad
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8
Prove the lim n→∞ (1^1+2^2+3^3+....+(n−1)^(n−1)+n^n)/(n^n)=1.
  • lfdahl
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232.15.3.50 Reverse the order of integration in the following integral
  • karush
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4
High School Question about a limit definition
  • BWV
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4
Find the antiderivative of V(2−x−x^2)/x^2
  • lfdahl
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2
What is the value of the triple integral for the given limits and function?
  • karush
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7
How to Find the Gradient of ln|r|?
  • Logan Land
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7
When Should You Take Calculus and Analytic Geometry?
  • mathdad
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5
What is the name for the function in a series?
  • Marksl
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1
Integral Calculus - Spot the Error
  • MermaidWonders
  • · Replies 7 ·
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7
Integrals & Limits: Intuitive Understanding of Convergence
  • MermaidWonders
  • · Replies 14 ·
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14
Derivative Problem: when does f(x)=-f'(x)
  • SGR
  • · Replies 7 ·
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7
Trigonometric Integral, weird results
  • Yankel
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3
Undergrad What is the benefit of differentiation under the integral sign?
  • Another
  • · Replies 3 ·
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3
Graduate Maximization problem using Euler Lagrange
  • petterson
  • · Replies 8 ·
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8
How do you evaluate the spherical coordinate integral at 244.15.7.24?
  • karush
  • · Replies 14 ·
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14
True or False Integral Calculus Question #3
  • MermaidWonders
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4
True or False Integral Calculus Question #2
  • MermaidWonders
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7
True or False Integral Calculus Question #1
  • MermaidWonders
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20
Undergrad Which x_0 to use in a Taylor series expansion?
  • morenopo2012
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5
Differentiation with square roots
  • Yankel
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3
Undergrad Euler’s approach to variational calculus
  • Pencilvester
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5
High School Need some help with understanding linear approximations
  • KFSKSS
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2
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30
What is the difference between ln 4 and log 4?
  • mathdad
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3
Evaluate the spherical coordinate integrals
  • karush
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8
Undergrad Looking for additional material about limits and distributions
  • mynick
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1
17.7.07 other orders usually work well and are occasionally easier to evaluate
  • karush
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2
Is Understanding Calculus Derivatives Really That Difficult?
  • ertagon2
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6
Can someone please explain why marks were taken off in this limit question
  • FrancisG
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1
Integration by parts, Partial fraction expansion, Improper Integrals
  • ertagon2
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