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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 How do I calculate the differential of f(x+dx)?
  • graupner1000
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7
Graduate Newton's Method for Optimization
  • brydustin
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2
Undergrad Calculus Homework Help (Mean Value Theorem)
  • Mac071008
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1
Undergrad Compute Line Integral: (x/y) from (2,4) to (10,100)
  • balrog1212
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2
Graduate Bound for S: Sum of n^k e^(-an)
  • bruno67
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Graduate Confused about Laurent series of analytic functions
  • spacelike
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5
Graduate Is the Analytic Function e^{ikz}/z Upper or Lower Half Plane for k>0?
  • matematikuvol
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18
Graduate Second derivative of an integral
  • Pietair
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2
Undergrad HelloCan anyone help me / tell me how to derive at Leibniz's
  • PFCalvin
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2
Graduate Can an integral that is a variable of itself be solved analytically?
  • kmarinas86
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10
Undergrad Is there such a thing as an indefinite multiple integral?
  • swampwiz
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3
Graduate Can someone give me the intuition behind not using time as a parameter
  • teddyayalew
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2
Undergrad I want to know more about series convergence (elementary)
  • 1MileCrash
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2
Undergrad I this mathematically 'legal'?
  • blahblah8724
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11
Graduate Change of variables for Delta distribution
  • esorolla
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20
Graduate Question about the Bolzano Weierstrass analogue in Hilbert spaces
  • I<3Gauss
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2
Graduate Fit with least squares, Levenberg–Marquardt algorithm
  • TheDestroyer
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2
Undergrad Question about fundamental thm calc part 1
  • Miike012
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Graduate Is f(z) := x^2 + iy^2 Holomorphic Anywhere?
  • blahblah8724
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Undergrad Ev(Unit Vector) and projection of a vector in a dot product
  • Usernam
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Undergrad Find $\frac{d(y^2)}{d(x^2)}$: Understand This Token
  • MHD93
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Graduate Proving Improper Integral with Complex Analysis
  • jusy1
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1
Graduate Proving X is a Set of Measure 0 with Infinite Sequence of Balls
  • Riam
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1
Undergrad Why is the integral 1/x equivalent to log base e?
  • pmqable
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3
Undergrad Changing Variables in a Table: Solving Unknown Formulas
  • ny553
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Undergrad Why we take right hand and left hand limit
  • otomanb
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3
Graduate What does this symbol mean (Countour integration over a boundary)?
  • joebohr
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8
Graduate Integral with Cutoff: Understand the Logarithmic Terms
  • LAHLH
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2
Undergrad Is ∫(1/(x²+25))dx² Correctly Evaluated as log(x²+25)?
  • labinojha
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4
Undergrad How Do Related Rates Apply to Moving Objects in Differential Calculus?
  • nDever
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2
Undergrad Approximation for the Exponential
  • moonjob
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3
Undergrad Does Zero Derivative Always Indicate Maximum or Minimum in Calculus?
  • batballbat
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5
Graduate Is the following Idea well-known/usefull? The points of T not surrounded by A
  • deluks917
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Graduate I don't understand this estimation lemma example
  • blahblah8724
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2
Graduate Can Bessel Functions be Simplified for Numerical Integration?
  • Astaroth.
  • · Replies 12 ·
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12
Undergrad A couple of questions regarding to my calculus work.
  • JJRKnights
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2
Undergrad Verifying Divergence Theorem with Triple/Surface Integrals
  • blank_slate
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1
Graduate How Do You Calculate the Intersection of Two Spheres in 3D Integrals?
  • kassem84
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1
Undergrad How Do I Calculate the Limit of Sin^-1X/X as X Approaches 0?
  • Voilstone
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4
Graduate Semicontinuity for single variable function. What is it all about?
  • perwiradua
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2
Graduate Rigorous definition of continuity on an open vs closed interval
  • kahwawashay1
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6
Graduate A sum of Cosines (Fouries series)
  • phonic
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2
Graduate Can Termwise Differentiation Be Applied to the Series Ʃ(2+3i)^(2+i)n?
  • sgonzalez90
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3
Undergrad A Function with no Derivative?
  • FeDeX_LaTeX
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3
Graduate Can an integral that is a variable of itself be solved?
  • kmarinas86
  • · Replies 3 ·
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3
Undergrad Is Sin^-1 X = (Sin X ) ^ -1 ?from my book it stated :f(x) =
  • Voilstone
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5
Graduate Integral of x^2*exp(x^2) using erfc tables
  • ronphysics
  • · Replies 7 ·
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7
Graduate Can a Sequence of Step Functions Uniformly Converge to a Continuous Function?
  • &quot;pi&quot;mp
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5
Graduate Complex Series, Region of Convergence
  • sgonzalez90
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3
Undergrad Advanced High Schol project Suggestions
  • hsmathfreaker
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2
Undergrad Summation+Differentiation=Disaster. I with a summation problem I'm having.
  • PEZenfuego
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6
Undergrad Alternating series (Leibniz criterion)
  • Damidami
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2
Graduate Can anyone tell me why this limit doesn't exist
  • blahblah8724
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2
Graduate Interpolation for numerical integration
  • kaniello
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2
Graduate Is There an Alternative Method to Derive Polynomials for All Real Numbers?
  • georg gill
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23
Graduate Possible Applications of Proving Non-Linear Functions on Curves
  • Kreizhn
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4
Undergrad How Graphs are affect by higher order derivatives
  • ncbs77
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2
Graduate Difficult Integral of trig and sqrt functions
  • dm164
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1
Undergrad Volume of a substance (in a circle)
  • ozone
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1
Graduate Can a bounded subsequence have infinitely many convergent subsequences?
  • Szichedelic
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2
Undergrad Interpolation help fitting curve to three points
  • KV-1
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3
Graduate Better Understanding of Complex Differentiability
  • Poopsilon
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6
Graduate Do Nonempty Perfect Sets in R Exist Without Rational Numbers?
  • AbelAkil
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1
Undergrad Prove: (a^{\frac{1}{n}})^m = a^{\frac{m}{n}} Using Roots & Powers
  • georg gill
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3
Graduate Does Dirac manipulate his Delta function sensibly?
  • lugita15
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13
Graduate Radius of convergence: 1/(1+x^2) about 1, using only real analysis
  • pcvt
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4
Undergrad Taylor serie of a function 1/(1+Z^2)
  • nicolas.ard
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3
Graduate Are There Infinite Solutions to e^x = c?
  • Frogeyedpeas
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7
Undergrad How do I rewrite this triple integral into the form \int\int\int dxdydz?
  • violette
  • · Replies 4 ·
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4
Undergrad Question about two-variable function
  • Zula110100100
  • · Replies 17 ·
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17
Undergrad Problem with proof for ClogA=logA^C
  • georg gill
  • · Replies 5 ·
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5
Undergrad Implicit differentiation gives too many stationary points
  • nomadreid
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2
Undergrad Graph of a trigonometric function
  • Duane
  • · Replies 1 ·
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1
Graduate Proving the Power Rule for Rational Exponents Using Induction
  • georg gill
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10
Graduate Does the Convolution Theorem Hold for Fourier Transforms Using Omega?
  • dimension10
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4
Graduate Derivatives of a Parametric Equaiton for Motion
  • syberraith
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3
Undergrad Property of Natural Log- Inequality equation
  • chetanladha
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5
Graduate How to Derive the Standard Normal CDF in Option Pricing Analysis?
  • yamdizzle
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7
Graduate Does the integral of ln(x)/(1+exp(x)) from 2 to ∞ converge or diverge?
  • hoho2666
  • · Replies 1 ·
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1
Graduate Conditional and absolute convergence (of series)
  • Damidami
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4
Graduate Numerical Analysis: Weierstrass & Fourier Analysis
  • talisman2212
  • · Replies 5 ·
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5
Undergrad Confused with the use of the word smooth .
  • Dembadon
  • · Replies 9 ·
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9
Undergrad Imaginary numbers what to do with them
  • larsbentley
  • · Replies 4 ·
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4
Graduate Fourier transform of t, 1/t and t^n
  • dimension10
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2
Undergrad How do you find the area under a diagonal hyperbola xy=a where a is a constant?
  • joebohr
  • · Replies 29 ·
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29
Graduate Basic question on fourier coefficients
  • neginf
  • · Replies 1 ·
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1
High School How to impress my calculus teacher again
  • stonecoldgen
  • · Replies 10 ·
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10
Graduate If f is infinitely differentiable and analytic on a dense set is f analytic?
  • deluks917
  • · Replies 2 ·
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2
High School Velocity of Aeroplane: 10degEofS @ 600km/hr
  • priti bartwal
  • · Replies 1 ·
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1
Graduate Proof Taylor Formula: Find without Polynomial Rules
  • georg gill
  • · Replies 24 ·
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24
Undergrad Solving Simple Inequality: Tips/Suggestions Needed
  • autobot.d
  • · Replies 5 ·
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5
Graduate Real analysis: show that a continuous function is defined for irrationals
  • nps12345
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2
Undergrad Basic Integral without Basic Concept
  • ahaanomegas
  • · Replies 7 ·
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7
Graduate Derivative of (1-F(x/a))(x): Interpretation & Solution
  • ruzbayhhi
  • · Replies 4 ·
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4
Graduate Does 0.999... Exist? Evidence & Argument
  • Opus131
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2
Graduate Compact Sets of Metric Spaces Which Are Also Open
  • Poopsilon
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10
Undergrad Help Needed: Simplifying Finite Product - Can You Help?
  • Shevchenko
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1
Graduate Series Expansion for a Sigmoid Equation
  • hak185
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2
Graduate What is the significance of Bessel function quotients?
  • rj_brown
  • · Replies 5 ·
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5
Graduate Calculate Field Flux on C: Grad(f)
  • IgorM
  • · Replies 1 ·
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1