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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
Undergrad Geometric Interpretation of √(x^2+y^2+z^2) and its Derivative
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Undergrad How can I use IFT to find the inverse of a function?
  • TylerH
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Graduate Question about Fubini's Theorem
  • Poopsilon
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Undergrad Solve linear equations using simplex method
  • russel.arnold
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Solving Limit at Infinity Problem: x^(2/3) / (log^2(x))
  • DanSlevin
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Graduate Transforming a summation into an anlytical expression
  • leonardo2887
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Undergrad Can you have a formula for every degree of polynomial?
  • questionpost
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Graduate Using surface waves to describe subsurface density.
  • norman_h
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Graduate Kepler's First Law of Planetary Motion
  • Brunetto
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Undergrad What is the history and significance of the Riemann integral?
  • Nano-Passion
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Graduate Indefinitte Integral of Vector Valued Function
  • Brunetto
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Undergrad Question regarding iteration and operations
  • Nano-Passion
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7
Graduate Is f(x) Holomorphic if f(x)^2 and f(x)^3 Are?
  • iamqsqsqs
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Undergrad Multivariate Calculus Text Recommendation
  • BloodyFrozen
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Graduate Solving Double Sum with _2F_1 Hypergeometric Function
  • Orbb
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Graduate Laplace Operator: Vector Dot Product & 2nd Derivative
  • ameeno97
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Solve Vertical Tangent: y-e^(xy) + x = 0
  • grgrsanjay
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High School What is the product rule for finding a derivative in calculus?
  • LogicX
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Undergrad Distance between two parallel planes
  • kahwawashay1
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Undergrad How Can We Approximate Integrals Using Summations?
  • ronm
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Graduate Why Does the Integral of a Step Function Remain Unchanged by Endpoint Values?
  • nascentmind
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Graduate Vectors differentiation formulas for Dot and Box Product how?
  • abrowaqas
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Undergrad Division By Infinity: Is It Defined?
  • unchained1978
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Graduate Proof: Norms converge imply Coordinates converge
  • ChemEng1
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Graduate Can Sinc Functions Serve as Nascent Delta Functions for Non-Smooth Integrands?
  • mmzaj
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Graduate Challenging Integral: Solving for P(cos(x)^3)/(x^6+1)
  • joao_pimentel
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Graduate Need keep in solove a system of differential equation
  • hgyphy
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Finding a value that will make a function continuous
  • shle
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Graduate I think this is a dominated convergence theorem question
  • thrillhouse86
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Undergrad Velocity on the surface of a sphere
  • phantom805
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Graduate Integral involving normal pdf and cdf
  • MikeGT
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Undergrad Help Understanding this simple proof? [lim x->3 x^2 = 9]
  • nickadams
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Graduate Singularities classification in DE's
  • fluidistic
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Graduate Recursive integral using integration by pars
  • oferon
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3
How to Solve an Integral Problem Involving a Continuous Function?
  • grgrsanjay
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3
High School Hi there,To find the gradient of a curve, we draw a chord on the
  • Jadaav
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Can you prove this result for any $m,n\in\mathbb{Z}^+$?
  • sbhatnagar
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Graduate Question About Del: Why Does Formula Fail?
  • AlonsoMcLaren
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3
Undergrad Is z^2 a Constant When Differentiating cos(yz^2) with Respect to y?
  • JamesGoh
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Graduate (Deceptively?) Simple question about Taylor series expansions
  • AxiomOfChoice
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Graduate Lim x -> 0: Solve f(x) = (-1+e^x) / x
  • DemoniWaari
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Graduate Understanding Riemann Zeta functions for s=1/3
  • joao_pimentel
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Graduate Use Green's Theorem to evaluate the line integral
  • jlmac2001
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Graduate Contour integral with absolute value
  • hunt_mat
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Can You Solve This Complex Trigonometric Integral?
  • sbhatnagar
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3
Undergrad How Do You Graph 3D Functions in Mathematica 8?
  • Levi Tate
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12
Can You Solve These Challenging Definite Integral Problems?
  • sbhatnagar
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4
Undergrad Epsilon-delta in problem solving
  • izemiralles
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2
Graduate Integrability & Differentiability of a Function: Implications for Derivatives
  • bruno67
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Undergrad Derivative of function = square of the function?
  • mnb96
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6
Undergrad How can I plot a 3D vertical plane in Mathematica?
  • SwaGGeReR
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2
Graduate Why Must Convex Functions Have Convex Domains?
  • kingwinner
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5
Graduate Sobolev type norms and basis functions
  • ahg187
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How Can We Prove This Positive Real Number Inequality?
  • poissonspot
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Graduate Solving Complex Integral: Cos(x^2) + Sin(x^2)
  • Nebuchadnezza
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3
Graduate Why do radians *work* in calculus and higher maths?
  • njl86
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6
Graduate How do we show that 2.2.19 and 2.3.21 are equal in this textbook?
  • crocomut
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Graduate Why is the unit square a 2-manifold?
  • JG89
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30
Graduate Understanding Sup of Function fi(x) i E I
  • kingwinner
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11
High School I confronted something in math which is way too confusing to me
  • sankalpmittal
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4
Undergrad Limit of the greatest integer number
  • LikeMath
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2
Graduate How to show integral identity involving gaussian over x
  • luke
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Graduate Confusion over line integrals, Green's Theoreom, Conservative fields
  • bugatti79
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1
Undergrad What is the average for cos2(x)?
  • ucbugrad
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2
Graduate Generating the Borel (sigma-)Algebra
  • matt.qmar
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4
Graduate Diverging Integral: 4 Powers of q in Numerator, 2 in Denominator
  • Elwin.Martin
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Undergrad Can You Find Inflection Points by Equating the Top Line of a Derivative to Zero?
  • fran1942
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2
Graduate A simple computation using Leibniz's Rule
  • jakemf1986
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2
Undergrad Converting infinite series into an integral - intuition
  • jd12345
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5
Graduate Repeated applications of sinusoidal functions
  • lordkelvin
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2
Undergrad Simplifying Integration by Parts: Solving ∫ln(x+x^2)dx Using the Hint x(1+x)
  • klancello
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4
Graduate Question about Proof of Inverse Function
  • transphenomen
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1
Undergrad What is the integral of cos^3(x)tan^4(x)?
  • baher
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1
Graduate How to integrate -exp((s^2 - t^2)/2)*(f'(t) - t*f(t)) dt
  • lamba89
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2
Graduate Variation Question: f Min then \delta f, \delta^2 f?
  • matematikuvol
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5
Graduate Some Questions about Papa Rudin (RCA) Chapter 1
  • joseph.hu37
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2
Graduate Differentiable Automorphisms of ℂ
  • alexfloo
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2
Undergrad How Does WolframAlpha Calculate the Sum of (2n+1)/(n(n+1)(n+2))?
  • antarctic
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2
Graduate Rigorous definition of derivative
  • Chsoviz0716
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23
Graduate Multiple integral notation (or abuse of?)
  • Freiddie
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1
Undergrad It seems strange?+x+x .(x times)=x^2 then x=2x(differentiate wrt x)?
  • vkash
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2
Graduate Does the vector triple-product identity hold for operators?
  • thecommexokid
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4
Undergrad Is this a valid way to simplify complex fractions?
  • bobsmith76
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1
Graduate What is the limit of x^lnx as x approaches 0+?
  • mehgunn
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7
Undergrad Tangents, velocities and other rates of change
  • bobsmith76
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1
Undergrad The differences between autocorrelation and convolution
  • azserendipity
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4
Graduate That is also equal to 0. Can you explain why?
  • 76Ahmad
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11
Undergrad The precise definition of limits
  • bobsmith76
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1
Undergrad Question about directional derivatives and tangent planes ?
  • basenne
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1
Undergrad Calculus 3 introduction to cross product
  • lonewolf219
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5
Undergrad Function in terms of its partial derivatives
  • bhatiaharsh
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6
Graduate Double integral over triangle with known nodes
  • Zhigang Wei
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3
Graduate Difficult Definite Integral Question
  • DHB_Integral
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1
Undergrad Partial integration of the function f = 1
  • caleb5040
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3
Graduate Extending Bounded metric spaces to compact spaces
  • s.hamid.ef
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2
Graduate I think there is some thing wrong
  • MIB
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4
Undergrad Partial Derivative f(x,y')=1: Why & True?
  • MHD93
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3
Undergrad Geometric Meaning of a Vector Integral
  • Lolcat Calc
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6
Undergrad Easy delta/epsilon proof of a multivariable limit
  • pureza
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4
Undergrad A very basic question about continuous function
  • pamparana
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4