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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 can i prove these two convergence theorem?
  • darthprince
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Undergrad Why don't pure mathematicians like to split derivatives?
  • KingBigness
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Graduate Can You Solve This Challenging Integral from a Test Question?
  • msmith12
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Undergrad Understanding Limits: Solving Problems and Examples
  • hamsterman
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Undergrad Orthogonality of cosine and sine functions
  • zheng89120
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Undergrad Why we measure angles with Radians
  • nDever
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Undergrad Solve X', X for Y: Matrix Algebra Help
  • pinto89a
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Undergrad Find the total distance traveled?
  • Kratos321
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Graduate Analysis Help: Limit Points of a Sequence
  • Armbru35
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3
Graduate Some questions about the Lambert W function
  • dimension10
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2
Undergrad Oblique Asymptotes: What happens to the Remainder?
  • LaMantequilla
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Graduate Taylor series and second derivative test: the degenerate case.
  • nobahar
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Undergrad Convergence/Divergence and Reordering of an Alternating Series
  • 1mmorta1
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Graduate Interested in Joining a Real Analysis Study Group Online?
  • estro
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Graduate Why Are Higher-Order Derivatives Needed for Continuity in Sobolev Spaces?
  • muzialis
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Graduate Big O Notation: Better Approximation than o
  • diligence
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Undergrad How Do You Calculate the Determinant of a 5x5 Matrix?
  • babygirl_28
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Graduate Is Continuity at Isolated Points Properly Defined in Metric Spaces?
  • alexfloo
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Undergrad Understanding Connectedness in Planar Sets: A Brief Overview
  • nickolas2730
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5
Graduate Dirac delta function in reciprocal function
  • jackychenp
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Graduate Overcoming Singularity Issues in Numerical Integration with MATLAB
  • strokebow
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Graduate Does every Hilbert space have an identity?
  • LikeMath
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7
Graduate I do not understand this vector identity proof
  • Xyius
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2
Undergrad What is this formula in Calculus?
  • MarcAlexander
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Undergrad Error computing total derivative
  • reemas
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Undergrad Proving Summation of \frac{1}{i(i+1)} = \frac{n}{n+1}
  • neom
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4
Graduate Question about algebraic rule for limsup
  • diligence
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Graduate Question about grad, nabla (vector operator)
  • aero&astro
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1
Graduate Finding more points for an R^4->R^2 matrix
  • Minihoudini
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Graduate How does multiplying by delta theta relate to spherical coordinates?
  • tmbrwlf730
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Undergrad Partial fractions and singularity point
  • fred3142
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High School What are some introductory notes on integration?
  • hunt_mat
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10
Undergrad Solving for d/dx of 3 Functions using the Product Rule
  • Notwen7
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3
Undergrad A problem with evaluating an integral
  • mahmoud2011
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7
Graduate What does it mean that the gradient is perpendicular/paralell to a vector?
  • crocomut
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Graduate Derivative of Complex Variables
  • EngWiPy
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6
Undergrad What is the trick to simplifying the Taylor series of 1/(1 + x^2)?
  • animboy
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3
Graduate How to Solve a Ricatti Equation?
  • CIMP
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9
Graduate How Can We Validate Equating Terms in Infinite Summations?
  • elegysix
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4
Graduate Proof of Euler-Mascheroni Constant
  • coki2000
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6
Undergrad Higher Order derivative representation
  • pari777
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Graduate What is the limit of the recurrence relation for g_n?
  • Marian123
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1
High School I'm confused by this problem. Is the answer 1 or 0 OR 1/2? If the
  • saratchandra
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High School Solving Implicit Equations for y in Terms of x
  • Fuz
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3
Undergrad Question about the delta-epsilon definition of a limit
  • swampwiz
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Undergrad Calculating the Main Diagonal of a Parallelepiped from Origin to Opposite Vertex
  • Minihoudini
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2
Graduate What is the physical meaning of curvature?
  • cnelson
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Undergrad F(x)=xabs(x) show f '(0) exists
  • stl11
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Graduate How can I properly compute this contour integral with the residue theorem?
  • freechus9
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Graduate Partial derivative of convolution integral
  • cdsi385
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Graduate Cauchy sequence and topological problems
  • furi0n
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3
Graduate I don't understand this definition of upper semi-continuity
  • moxy
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2
Undergrad What Is the Physical Meaning of ifftshift in MATLAB?
  • vivek.iitd
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Graduate Is every metric space a hausdorff space too?
  • AdrianZ
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7
Graduate Convolution Integral: f*g=f or f*2πδ=f?
  • matematikuvol
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10
Graduate What is the Solution to this Tricky Inverse FT Integral?
  • skrieger
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4
Undergrad Q: Can the vector product be factored out from an integral in electromagnetism?
  • daudaudaudau
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Graduate If f is continuous on [a, b], then f is bounded on [a,b].
  • Esran
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9
Graduate Can Any Function Satisfy a General Integral Equation?
  • Vorde
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5
Undergrad Integral Help exp (-x)/x with 0 to t limits
  • piyush
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5
Undergrad Should I Study Geometrical Proofs for Derivatives of Cos and Sin?
  • Nano-Passion
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3
Undergrad Why is function F used in the proof of l'hopitals rule?
  • georg gill
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13
Undergrad How Can I Systematically Determine Convergence and Divergence of Series?
  • tamintl
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Graduate L'Hopital's rule proof questions
  • mrbean
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3
Graduate How Does Substitution Simplify the Gamma Function Integral?
  • matematikuvol
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3
Undergrad Net Work Calculus: Understanding mΔx(Δv/Δt)
  • Nile3
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3
Graduate Why Is lim g(t)/t = 0 as t -> 0?
  • kingwinner
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7
Undergrad Question about limits and derivatives.
  • MarcL
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9
Undergrad Understanding how to reverse the integration order
  • Taturana
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6
Undergrad Recurrence relations - intuition
  • Avatrin
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3
Graduate Partial derivative in spherical coordinates
  • jonathanpun
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3
Undergrad Limit to Infinity with Sqrt in Denom.(Is this correct?)
  • Ordain
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2
Undergrad Is Formal Math Necessary for Physics Success?
  • cochemuacos
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4
Undergrad What are the applications of real analysis?
  • zheng89120
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3
Graduate Continuous Function? g(x): Real Q & Non-Q Cases
  • jacksonjs20
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6
Undergrad Converting Parametric Equations to Cartesian Coordinates
  • calcphys92
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1
Graduate Taylor Series: Show Terms Decay as 1/n^2
  • optics101
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4
Graduate Tricky Integration in Rocket-Momentum Derivation
  • mar2194
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3
Graduate Cauchy's Theorem: Analytic Functions and Integrals
  • Daniiel
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2
Graduate Best bound for simple inequality
  • AiRAVATA
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3
Graduate Variable conversion in surface integral
  • nigels
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2
Undergrad Difficult Trigo Integration, with surd.
  • wlooi
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1
Graduate Proof that the legendre polynomials are orthogonal polynomials
  • center o bass
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3
High School Difference between Pre-Calculus and Calculus?
  • MarcAlexander
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4
Graduate Problem with numerical integration of error function
  • maverick280857
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9
Graduate Hmmm Arzela-Ascoli, maybe?
  • AxiomOfChoice
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6
Undergrad How do I solve for dP in this integral equation?
  • s7b
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3
Undergrad Is the Limit Definition of Continuity Equivalent to the Standard Definition?
  • Freye
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2
Undergrad Small question concerning limits definitation
  • Mr.Rockwater
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7
Graduate Is it possible to derive Divergence Theorem from Stokes Theorem?
  • Tosh5457
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10
High School A simple question about integration by substitution
  • ScienceNerd36
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2
Undergrad Vector Calculus Subscript Notation
  • physics4life
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4
Graduate Does the Weierstrass M-Test work for all spaces?
  • lugita15
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7
Undergrad Quickly Estimate Apery's Constant Using Partial Sums and Integrals
  • snipez90
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Graduate How Do You Integrate tan(x)ln(x) Over the Complex Plane?
  • Frogeyedpeas
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2
Undergrad Surface Integrals: Clearing Up Misunderstanding
  • Bassalisk
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8
High School Help me to chose the right calculus textbooks.
  • Vyenn
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9
Undergrad Some questions about differentiability
  • athrun200
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3
Graduate To show that an integral is divergent
  • longrob
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2
Graduate Fractional Calculus for Complex Orders: Applications and Theory
  • dimension10
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1