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Differential Equations

Mixed approximation vs. full approximation for a power series expansion
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Undergrad Mixed approximation vs. full approximation for a power series expansion
Opinion Needed: Is Student's Solution Around x=2 Correct?
  • Amer
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Graduate How to Verify the Equation: pi^2/8 = Sum (1/(2n+1)^2) without Prefix?
  • bomba923
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Graduate Finding Surface for Complex ParametricPlot3D
  • zxh
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Graduate Finding the curl in diffrent coordinates by transforming variables
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Graduate Tangent vector to a parametric curve
  • praharmitra
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Graduate How a vol. integral becomes a vol. integral plus surface integral
  • tom8
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6
Undergrad Difference between lim as x→∞ and lim as |x|→∞
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Graduate Non-rotating vector fields with non-zero Curl
  • ShayanJ
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Graduate Universal Law of Gravitation described by complex functions
  • coolbeans777
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2
Undergrad Recurrence Relation - limit of a sequence
  • dumbQuestion
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1
Is Calculus Really Awesome Compared to Linear Algebra?
  • Mathguy15
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26
Undergrad Zeros of f(x) vs. Zeros of f'(x)
  • drewfstr314
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8
Graduate Power Series Expansion: Find Alternatives to Ʃ ((-1)^(i-1))/i
  • venom192
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Undergrad Is it possible to define this explicitly?
  • Nano-Passion
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7
Undergrad U-substitution for Area of a SemiCircle
  • DahnBoson
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4
Graduate How was (-1, 2/π) found to be a solution for the Putnam Calculus problem A3?
  • autodidude
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Undergrad How Does the Standard Equation Define a Cylinder?
  • Nano-Passion
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4
How Do You Apply the Quotient Rule with Square Roots?
  • sleepless
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4
Graduate Chain rule with partial derivatives and divergence
  • bigerst
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6
Undergrad What is the integration step used for quadratic factors in the denominator?
  • Polymath89
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3
Undergrad Solve Summation Problem & Find Notes | Hello
  • baby_1
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6
Undergrad Explaining Chain Rule: vdv/dx=1/2(dv^2)/dx
  • vish22
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3
Graduate Questions involving differentials (again)
  • autodidude
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4
Undergrad Applications of Calculus and Numerical Methods
  • nebbione
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Graduate NDSolve problems in Mathematica (differential equations)
  • sky8754180
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1
Formalizing Understanding of Relationships between f(x), f'(x) and f''(x)
  • DeusAbscondus
  • · Replies 10 ·
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10
Undergrad Double Integrals - application to centre of mass.
  • CAF123
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3
Graduate Discretization of the divergence operator
  • matteo86bo
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1
Undergrad Integration by Parts: Understanding dv & dx
  • Bashyboy
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2
High School What is the purpose of integration?
  • mrtn
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8
Undergrad Please correct my proof for the derivative of log x
  • galimax
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2
High School What Is an Integral in Simple Terms?
  • Peppino
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16
Decimal expansion to rational number
  • Dustinsfl
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2
Undergrad Why Does the Area Between Curves in Terms of y Seem Negative?
  • dumbQuestion
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2
Graduate Understanding Derivative and Integral Notation in Partial Differentiation
  • clm222
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4
High School I feel so dumb for asking this question but domain of a rational function help
  • dumbQuestion
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7
Undergrad Limit Theorem: Does f'(x) Approach 0 as x Goes to Infinity?
  • vincent_vega
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10
Undergrad A question about Taylor and MacLauren series
  • fleazo
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9
Undergrad Does third derivative verify if we have a point of inflection?
  • dumbQuestion
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2
Graduate Intersection of concave functions
  • hermanni
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12
Graduate Vector & Tensor Transformation in Physics
  • nigelscott
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2
Undergrad For each real number x, let f(x) be the minimum of the numbers 4x+1,
  • azizlwl
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5
Undergrad Limitations of Comparing t/U and t^2/U Variables
  • mvww
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8
Graduate Optimization & singular Hessian matrix
  • swampwiz
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2
Graduate Fourier transform of a supergausian
  • modaniel
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5
Relationship obtaining between various derivatives
  • DeusAbscondus
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20
Graduate Need help with real life math problem
  • thetexan
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17
Graduate Can this Recursive Solution to an Infinite Sum be Simplified?
  • aodesky
  • · Replies 5 ·
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5
Undergrad Intuition behind Integration by parts
  • Polymath89
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3
Is my solution for finding the values of t where h is equal to 1.5 correct?
  • Bushy
  • · Replies 1 ·
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1
Solving Chain Rule Problems with e^(u): An Explanation for Beginners
  • DeusAbscondus
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17
Undergrad Under which circumstances would sigma summation be used instead of integration?
  • camjohn
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8
Graduate Area under the curve using polar coordinates - help
  • fleazo
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7
Undergrad Why Doesn't My Fourier Series Expansion Look Like a Square Wave?
  • back2square1
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3
Graduate Is This New Theorem Related to Stokes' Theorem?
  • rbwang1225
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4
Graduate Derivative of integral of function with respect to the function
  • DCG
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12
Undergrad Finding volume with polar coordinate.
  • isdouble
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5
High School Intuition for arc length, angle and radius formula
  • gokuls
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3
Undergrad How to calculate the height of a parabola, given base width and arc length?
  • DovlaMEN
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5
High School Doubt regarding the sequence (-1)^n
  • Ryuzaki
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5
Graduate What are the requirements for SVD to work?
  • spookyfw
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8
Graduate How to derive nth derivative of x(t), when nth derivative of t(x) is known?
  • weetabixharry
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6
Graduate Engineer stumped by pure math, need to find some way to get started
  • lankman
  • · Replies 2 ·
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2
Undergrad Understanding Calculus Theorems for Limits
  • Interception
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2
Undergrad Understanding Integration by Parts
  • Saterial
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3
Graduate Is the Limit of (1 + 1/b)^b as b Approaches Infinity Equal to e?
  • n_kelthuzad
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30
Graduate Solving Line Integrals with Vector Cross Products
  • Bassalisk
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4
Balance After 5 Years of Compound Interest on Monthly Deposits
  • hatelove
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3
Undergrad In integrating to find a volume when is the function included?
  • Fractal20
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3
Graduate From Gaussian Quadrature to Chebyshev Quadrature
  • CFXMSC
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3
Undergrad Converting an Integral to a Rieman Sum
  • smize
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3
Undergrad What does the Interval of Convergence for a power series tell me?
  • BarringtonT
  • · Replies 4 ·
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4
Undergrad Minimum distance between a point and a geometric locus
  • aliekor
  • · Replies 9 ·
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9
Chain rule problem and choice of notation
  • DeusAbscondus
  • · Replies 8 ·
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8
Graduate Why are non-intersecting branch cuts necessary for multiple-valued functions?
  • modnarandom
  • · Replies 2 ·
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2
Graduate Analyzing Line Integral over Non-Exact Region |x|+|y|=4
  • nasshi
  • · Replies 4 ·
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4
Integral: For any natural number , evaluate
  • sbhatnagar
  • · Replies 3 ·
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3
Graduate How to prove that f(x,y) is complex
  • friend
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11
Having a problem working through an equation
  • DeusAbscondus
  • · Replies 5 ·
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5
Undergrad Difference between differentiating a function and an equation
  • autodidude
  • · Replies 4 ·
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4
How can I find the derivative of ln(sin5x)?
  • DeusAbscondus
  • · Replies 16 ·
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16
Graduate Is the Cancellation of Differentials Valid in Calculating Inductor Energy?
  • BucketOfFish
  • · Replies 4 ·
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4
Graduate How Does Modifying Parameters Affect Convolution and Fourier Transforms?
  • AxiomOfChoice
  • · Replies 4 ·
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4
Graduate Approximating the Sum of Log Squared Terms for Large n?
  • yogo
  • · Replies 8 ·
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8
Graduate Primitives, Proof based on theorems for differentiation
  • c.teixeira
  • · Replies 8 ·
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8
Undergrad Derivative of (2/x) + (1/y) = 4 and
  • autodidude
  • · Replies 5 ·
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5
Undergrad Simple harmonic motion and damping
  • Lamarr
  • · Replies 1 ·
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1
Undergrad Right Triangle Maximization Problem
  • xaenn
  • · Replies 5 ·
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5
Undergrad Can I get the differential out of the integration
  • Marwan_H
  • · Replies 16 ·
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16
Undergrad How does excel calculate the best fit line?
  • jsbxd9
  • · Replies 5 ·
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5
Graduate Complex integral coming from a 1loop diagram
  • AdeBlackRune
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1
Graduate Regarding Upper and lower integral sets.
  • nascentmind
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3
Graduate Differentiating y=x^x: Acceptable Method?
  • autodidude
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2
Undergrad Help spotting trig identities to simplify integration
  • Nikarasu M
  • · Replies 7 ·
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7
Is the Chain Rule Necessary for Derivatives of f(x) = 1/(x√(5-2x))?
  • hatelove
  • · Replies 12 ·
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12
  • Poll Poll
Undergrad Indefinite Integration of function's like log(cos(x))?
  • Najmoddin
  • · Replies 13 ·
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13
Graduate Complicated Interpolation (Multivalued)
  • ZombieKitty
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2
Graduate Inverse Fourier Transform in 2-d
  • nickthequick
  • · Replies 3 ·
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3
Undergrad Integration of Rational Functions with Trigonometric Substitutions
  • hms.tech
  • · Replies 8 ·
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8
Is 1/(1+sinx) + 1/(1-sinx) Equal to 2sec2x?
  • chlobuggy
  • · Replies 2 ·
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2