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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 to define the domain of a 2-variable function as this?
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Undergrad Limits of integration for regions between polar curves
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Undergrad Can someone determine what this iteration works out to, where x'
  • grav-universe
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8
Graduate Splitting Infinite Series into Real and Imaginary Parts
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2
How Do You Partially Differentiate Theta in Polar Coordinates?
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Graduate 3d trajectory of system of wheels
  • snay
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High School Why Define a Bound Vector for Position and Velocity?
  • jonlg_uk
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6
Graduate What Root-Finding Algorithm Converges Faster Than Newton-Raphson?
  • DuncanM
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3
Undergrad Solving for distance: How do you get to v=d/t?
  • dag45hol
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7
Extrema points, function of three variable
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4
Syntax of Sum and Integral Notation: Understanding the Differences
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Undergrad Iteration functions for Fixed Point method
  • carlosbgois
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1
Undergrad Gradient Confusion: Explaining Gradients in Layman's Terms
  • jonlg_uk
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22
Undergrad Major problem in differentiation from first principles
  • spaghetti3451
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Undergrad Discrete Fourier Transform of Even Function
  • rmp251
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8
Undergrad Kline Calculus Problems - Simple Derivatives and Marginal Cost
  • ghostskwid
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Graduate Orthogonal complement of gradient field?
  • liguolong
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High School How to control a graph of f(x) = y
  • Xcrypt
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What is the simplified form of the limit as x approaches infinity?
  • karush
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Graduate Intuitively understanding div(curl F) = 0
  • rolfz
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Undergrad Why does a^x = e^(x(lna)) and how can this help with finding the derivative?
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4
Undergrad How to get fourier transform from fourier series
  • Ahmed Abdullah
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Graduate Unbounded Sequences w.r Divergence
  • skunkswks
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Undergrad How to Integrate Termwise Between 0 and x?
  • DEMJR
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Undergrad Implicit differentiation - major confusion
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Graduate Determining if a vector field is conservative
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Graduate Analogy for Curl with Torque: Correct?
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Graduate Does Σ 1/(n(log(n))^p) Converge for p>1?
  • hivesaeed4
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6
Undergrad Determining Convergence of ((sin(n))^4)/(1+n^2)
  • hivesaeed4
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3
Undergrad Which Term to Use for Limit Comparison Test?
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4
Graduate Simple question about simple functions
  • Fredrik
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4
Undergrad Exponential Growth and Logarithmic Growth
  • austinv
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2
Undergrad Understanding Monotonic Sequences: Simplification and Frustration
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7
Undergrad Find a formula for a higher degree antiderivative
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Undergrad Good book about Vector Calculus?
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Undergrad Parametric equation confusion of d2y/dx2
  • Eats Dirt
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4
Undergrad Limits/continuity - finding largest delta
  • roman93
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1
Undergrad What's dt in finding normal vector for curvature
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Undergrad How is T the tangent to a vector
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Undergrad Help with Chain Rule: Step by Step Explanation
  • wumple
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9
Undergrad Why Use Double Modulus Signs in Vector Dot Products?
  • hivesaeed4
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Undergrad Understanding what integrating in polar gives you
  • tnmann10
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3
Graduate Deriving the Power Series of Arctan through Integration
  • hivesaeed4
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3
Graduate Directional Derivatives and Limits
  • autarch
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9
Undergrad When was the Chain rule first used?
  • goodoldrebel
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5
Undergrad Slopes of tangents of a cubic function
  • fawk3s
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16
Undergrad Napier's Constant Limit Definition
  • scorsesse
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Graduate Find Entire Functions with |f(z)|=1 for all |z|=1: Proving Vigorously
  • iamqsqsqs
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Graduate Can the integral be made to converge by changing the variable?
  • mmzaj
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Graduate Derivative wrt Complex Conjugate
  • SwordSmith
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Undergrad What Are the Restricted x Values for the Integral of dx/(sqrt(d^2 + x^2))?
  • carlosbgois
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2
Undergrad How to integrate this conundrum?
  • I<3Gauss
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3
Graduate Derivation of imaginary exponential function
  • vinh pham
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1
Graduate Help Solve Integral: I = \int_0 ^{\pi}dt\sqrt{k^2 + \sin^2t}
  • phsopher
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6
Graduate Higher order differentials: dZ, d^2Z, d^3Z
  • Ask4material
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1
Graduate Partial derivatives (question I am grading).
  • MathematicalPhysicist
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3
Graduate Integral using Euler's formula.
  • cragar
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10
Graduate Convergence radius of a perturbation series
  • wdlang
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Graduate Biholomorphic Mapping: Proving f(z) = z for All z in Ω?
  • iamqsqsqs
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2
High School What Is the Purpose of Differentiating a Function Twice?
  • Sofie1990
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2
Graduate How does distributional derivatives work in the context of linear mappings?
  • Kalidor
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3
Graduate Level Sets and Degenerate Critical Points
  • autarch
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2
Undergrad Doubt with a theorem that if f is cont. at interval it has max
  • Hernaner28
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Undergrad Integration with sqrt in denominator
  • senorarosada
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2
Undergrad Is x^0 Differentiable at x=0 Despite 0^0 Being Undefined?
  • Shawn Garsed
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26
High School Can This App Really Help with Calculus?
  • Jaytizzle
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1
R - Richardson Extrapolation for Accurate Estimates
  • blackthunder
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Graduate Simple proof of uniform continuity
  • mrchris
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2
Graduate Sum of sets with positive measure contains interval
  • hhj5575
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6
Undergrad Finding the volume of the cone using cylindrical polar coordinates?
  • sarubobo28
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2
Undergrad Is the Nonelementary Integral of cos(x)/x^2 Positive or Negative?
  • nawidgc
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16
Graduate Integral representation of modified Bessel function of the second kind
  • ulriksvensson
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1
How Do You Graphically Represent a Change of Variables in a Coordinate System?
  • GreenGoblin
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2
Undergrad Fourier Series and the first term
  • rdfloyd
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6
Undergrad Can I Construct an Infinite Series that Approaches a Specific Limit?
  • thetexan
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16
Graduate Does a Holomorphic Map on D(0,1) Always Map the Disk onto Itself?
  • Bacle2
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15
Undergrad How Are Line Integrals Used in Finance and Economics?
  • woundedtiger4
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3
Graduate What Are the Limits of {xn} and {yn} in the Given Sequence?
  • huey910
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4
Graduate Sum of two closed sets are measurable
  • hhj5575
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8
Undergrad Need guidance on where to start on the study of the variational principle
  • Nano-Passion
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3
Graduate Can Integrating a Generalized Geometric Series Reveal New Insights into √π?
  • alexfloo
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3
Graduate Some questions concerning asymptotic expansions of integrals
  • iccanobif
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1
Undergrad Is this proof (about limits) acceptable?
  • Mathoholic!
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5
Undergrad Why Do Sphere Surface Areas Differ With Same Approximation?
  • joseph_seb
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3
Graduate Convergence of complex log series on the boundary
  • polydigm
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1
Richardson's Extrapolation for Derivative Estimation
  • CaptainBlack
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1
Graduate Solving the Limit of sin(\pi*n/4)*\Gamma(x) Problem
  • SumThePrimes
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3
Graduate A new Method of Differentiation (PURE ALGEBRA), what do you think?
  • riyadh144
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4
Undergrad What is the trigonometric identity used to simplify this expression?
  • cocopops12
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1
What are the Intercepts of the Sine Wave $y=\sin{2(x-\frac{\pi}{4})}$?
  • karush
  • · Replies 5 ·
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5
Graduate Question about total derivative/chain rule
  • mSSM
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4
Graduate Estimating Error in a Quadrature
  • Teg Veece
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6
Undergrad Solve Improper Integration: Integrand Convergence
  • Redoctober
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5
Undergrad Basic limit question ( f(x) = x^2 )
  • ltjrpliskin
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4
Investigating Continuity of $f(x)
  • alexmahone
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3
Graduate Is Taking the Gradient of a Vector Possible?
  • Henry Morton
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4
Graduate Conformal mapping between two half space
  • radiofeda
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2
Understanding Change of Variables: $x=u^{2}-v^{2}, y=2uv$
  • GreenGoblin
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8
Graduate Derivative involving Summation Notation
  • Lucid Dreamer
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2
Undergrad Can L’hospital rule work for finding limits of complex functions
  • xdrgnh
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