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Differential Equations

Mixed approximation vs. full approximation for a power series expansion
6.8K threads
Undergrad Mixed approximation vs. full approximation for a power series expansion
Equation of slope of a function that passes thru a point
  • Nemo1
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High School A simple differentiation and partial differentiation
  • mech-eng
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Undergrad Unsure of solution to improper integral
  • Satirical T-rex
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Undergrad Can this Laplace transform integral be solved with a symbolic integrator?
  • strangerep
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Undergrad How Do You Solve the Integral of 1/(y+cos(x))^2?
  • Needhelp62
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How do I find the upward pointing unit normals for $U$ and $D$?
  • NoName3
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3
Volumn of x=2sqrt y. About y axis
  • karush
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Undergrad Geometric Series Convergence and Divergence
  • Drakkith
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Undergrad Finding the PDF of X Given an Expression
  • EngWiPy
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Undergrad Solve for Integral of Tricky Function in Calculus | Math Subject GRE
  • UnivMathProdigy
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3
High School Trouble converting definite integrals to Riemann's and back
  • Terrell
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1
Checking if $\text{ curl } \vec{F}=\vec{0}$ for $\vec{F}$ & $f$
  • evinda
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2
Undergrad Calculus of Variations Dependent variables and constraints
  • shedrick94
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1
Undergrad How Does L'Hopital's Rule Intuitively Explain Limits?
  • Terrell
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5
Undergrad Solving Gradient of ||f(x)||^2 - Chain Rule
  • perplexabot
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3
When Should Parametric Equations Be Used to Calculate Curve Length?
  • karush
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2
High School (conceptual) question about asymptotes
  • ozil
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2
Volume of Solid of Revolution of f(x)
  • Theia
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2
High School True unit of average integral result
  • ecoo
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6
Undergrad Integral problems with polar coordinates and variable substitution
  • Edison Bias
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41
Graduate Bessel decomposition for arbitrary function
  • tony_yang
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6
Graduate Fourier Transform of Piecewise linear spline wavelet
  • Zarmina Zaman Babar
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2
High School Finding intervals of a 3 degree function?
  • KevinFr
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4
Undergrad How Is the Divergence Theorem Applied to Derive Vector Field Identities?
  • TheCanadian
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4
Maximizing volume of cone inscribed within cone
  • nina94
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2
Undergrad Proving the Continuity of Fourier Transform in the Limit as L Tends to Infinity
  • henry wang
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Velocity and displacement and distance
  • karush
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3
Undergrad Reversing the order of summation
  • henry wang
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6
Undergrad How is the constant pi/L deduced in Fourier series?
  • henry wang
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4
Undergrad Is Convolution a Viable Method for Enhancing Printing on a Rotating Platen?
  • mreff555
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1
Undergrad Integration of 1 variable in 2 different ways.
  • sreerajt
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6
Undergrad Proving grad operator yields perpendicular vector to contour
  • henry wang
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2
Undergrad Proving that a function is a solution to the wave equation
  • Will Freedic
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1
Undergrad Alternating Series, Testing for Convergence
  • Drakkith
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4
Discontinuity: Asymptotic discontinuity
  • samir
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4
Undergrad Example of *Non* Cartesian Vector/Tensor (not the coordinate s
  • applestrudle
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Undergrad Why does it matter what convergence test I use?
  • enh89
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13
Undergrad How does the limit comparison test for integrability go?
  • JulienB
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Undergrad General questions about integrals (definitions)
  • JulienB
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13
Find a formula for the Riemann sum and take the limit of the sum as n->infinite
  • tornado711
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High School Integrating velocity equation problem
  • Sho Kano
  • · Replies 11 ·
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11
Discontinuity: Jump discontinuity
  • samir
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1
Discontinuity: Point discontinuity
  • samir
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8
Undergrad Related Rates (+Trig) Question
  • NatFex
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7
Undergrad Why use a subset in the definition of bounded above?
  • Incand
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2
High School Using multiple calculus books at the same time......
  • Alpharup
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High School Can open sets be described in-terms of closed sets?
  • Alpharup
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4
Is the Function $f(x,y)=\frac{x}{y}+\frac{y}{x}$ Differentiable and $C^1$?
  • evinda
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7
Graduate Evaluation of a horrible Multiple Integral
  • Korbid
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4
High School Trapezoidal Rule , number of segments
  • omar yahia
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3
High School Complex Integration By Partial Fractions
  • Brandon Trabucco
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1
Undergrad Miscellaneous Integration Technique
  • Noriele Cruz
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2
Undergrad Determining the Rate at Which Functions approach Infinity
  • Dopplershift
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3
Undergrad How to Derive Exchange Energy from Ground State Equation?
  • supernano
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5
Undergrad Is the Sum of All Triangles Really Infinite? A Problem to Discuss
  • member 428835
  • · Replies 7 ·
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7
Prove Inequality w/o Knowledge of $\pi$
  • anemone
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8
High School Continuous and differentiable functions
  • member 587159
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5
Undergrad Root of nth Degree Polynomial f(x) in Spivak Calculus Ch. 7
  • Alpharup
  • · Replies 7 ·
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7
Undergrad How to understand the notion of a limit of a function
  • "Don't panic!"
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8
Graduate Ideas on how to easily solve this long derivation?
  • Kaasen
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1
Undergrad General questions about limits of sequences
  • JulienB
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1
Solve for a,b,c,d Solve \frac{f(-1)+f(1)}{2}=f(0) for a, b, c, d
  • Bushy
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1
High School What does the derivative of a function at a point describe?
  • Frank Castle
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36
High School Can some explain why e^i(x) = cos(x) + isin(x)?
  • iknowsigularity
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6
Undergrad What is the definition and use of homotopy in curve mapping?
  • Woolyabyss
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1
Undergrad Computing the normal scalar component of acceleration
  • Han_Cholo
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3
Understanding Curve Sketching for a Challenging Function
  • kjland
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3
Undergrad Defining Functions as Sums of Series
  • Drakkith
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4
Undergrad Normal vector on complex function
  • MarkoA
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3
High School What Methods Calculate the Volume of a Solid Revolved Around Non-Standard Axes?
  • EverythingIsACircle
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2
Undergrad Can You Use the Appended Matrix Method for 4x4 Determinants?
  • Kevin McHugh
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1
Undergrad Symbol used in total differential and small errors
  • goggles31
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2
Undergrad Why non-standard analysis is not used?
  • Alpharup
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3
What does this Limit mean geometrically?
  • evinda
  • · Replies 3 ·
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3
High School Continuous but Not Differentiable
  • logan3
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2
Undergrad How Does the Limit of cosh and sinh Approach 1?
  • thegirl
  • · Replies 4 ·
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4
High School Differentiating some simple harmonic equation
  • Trance-
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2
Undergrad Can't find a solution to this integral
  • MarkoA
  • · Replies 4 ·
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4
Undergrad Q about Fourier Coefficient Derivation
  • Enigma322
  • · Replies 2 ·
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2
Vertical and Horizontal Asymptotes
  • mathewslauren
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3
Help with hydrostatic force questions
  • upnorthgy
  • · Replies 5 ·
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5
Undergrad Function of angle between vector field and scalar function
  • Kavorka
  • · Replies 1 ·
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1
Undergrad Solve Chain Rule Confusion with Diff. Eq. | Help
  • karenara
  • · Replies 10 ·
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10
Proving $\sum_{i=0}^{\rho} \binom{n}{i} (q-1)^i \leq (n q)^p$: Is It Possible?
  • evinda
  • · Replies 1 ·
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1
Undergrad How do you integrate a term with a differential?
  • Vardaan Bhat
  • · Replies 29 ·
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29
Undergrad Solve Fermi-Dirac Integral: Get Help Now!
  • arneet
  • · Replies 2 ·
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2
Find Min of $(a-1)^4+(b+2)^4$ w/ $a+b\ge 3$
  • anemone
  • · Replies 4 ·
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4
Undergrad Integration leading to ERFI solutions
  • Oaxaca
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1
Undergrad Epsilon-Delta definition property.
  • Alpharup
  • · Replies 9 ·
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9
How to find the derivate of this function ?
  • Yankel
  • · Replies 3 ·
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3
Undergrad Magnitude of the Second Derivative
  • StanEvans
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6
Undergrad General Question about Convergence
  • nfcfox
  • · Replies 8 ·
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8
Undergrad Just to be sure about the Jacobian matrix and determinant....
  • rabbed
  • · Replies 1 ·
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1
Undergrad Power Series solution to dy/dx=x+y
  • Odious Suspect
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12
High School Recast a differential equation with a change of variable
  • Happiness
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2
Undergrad What Is the Order of Derivatives in Variable v?
  • vktsn0303
  • · Replies 5 ·
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5
Fourier Transform: Calculate $\hat{g}(\omega)$
  • evinda
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4
Formulating Fubini's Theorem for Lebesgue Integrable Functions
  • evinda
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2
Undergrad I found a *useful* method to calculate log(a+b), check it out
  • guifb99
  • · Replies 8 ·
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8
Finding relative extrema of a cubic function
  • Nikolas7
  • · Replies 9 ·
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9