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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 Why do we need to imagine a varied path in the calculus of variations?
  • NihalRi
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2
What Are the First Two Terms of sin(sin(2x))?
  • Guest2
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2
Undergrad Is this integral formula correct?
  • 5P@N
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6
Another particle moving in a straight line problem
  • karush
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6
Undergrad Is the function differentiable at x = p?
  • PcumP_Ravenclaw
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5
Which Laurent Series for $\frac{1}{z(z+2)}$ in the Region $1 < |z-1| < 3$?
  • ognik
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26
Undergrad Limit of function with two variables
  • member 508213
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9
How Is the Inverse Hyperbolic Tangent Derived from Its Definition?
  • Guest2
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4
Volume enclosed by rotating a curve segment
  • Guest2
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5
Is the Length of the Curve Segment Correct?
  • Guest2
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6
Series Convergence with Comparison Test
  • Zoey93
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2
AP question: Integral of 9 / (1 +9t^2)
  • grapez
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5
Distance Travelled at Time t: Solve Velocity Problem w/ a=5, b=4, c=1
  • dave dx
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3
Graduate Integral equivalent to fitting a curve to a sum of functions
  • admixtus
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3
Graduate Horizontal tangent to wolfram alpha's heart-shaped graph
  • nomadreid
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2
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33
How is the Volume of a Solid of Revolution Derived?
  • Guest2
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3
High School Is the derivative of 2x^2 = 4x or 8x?
  • 5P@N
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9
Undergrad Why is the integral of 1/x from -1 to 1 divergent?
  • ecoo
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2
Graduate Necessary and sufficient condition for differentiability
  • Local
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6
Graduate Understanding Trigonometric Substitution
  • Astro
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12
Undergrad Why is an integrated function with multiple terms....
  • 5P@N
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13
Undergrad Why is ∫x/(1+x^2)dx = 1/2ln(1+x^2)?
  • 5P@N
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4
Undergrad Def. of derivative and cosx=sin(Pi/2-x) to prove y'=-sinx
  • ThaSlave
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2
Calculating $\displaystyle \lim_{x\to 0}$ Complex Limit
  • Guest2
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4
Undergrad What is the derivative of the following?
  • avito009
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5
Limit as x goes to 5 from below
  • Guest2
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6
Calculating Hyperbolic Limit of $\frac{x}{\cosh{x}}$
  • Guest2
  • · Replies 3 ·
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3
Calculating the Limit of $\displaystyle \frac{5^{\sin{h}}-1}{\tan{h}}$
  • Guest2
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3
Show $\displaystyle \lim_{x \to \infty} \frac{50x^{10}+100}{x^{11}+x^6+1}=0$
  • Guest2
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4
Calculating Limit as x Approaches Infinity
  • Guest2
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1
I<0? Evaluate New Year Challenge Integral
  • anemone
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4
Undergrad Implicit Differentiation z=f(x/y) meaning
  • xoxomae
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6
Undergrad Can I undo a derivative to solve for a variable?
  • Intle
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13
Graduate Relative Velocity of locus of curves
  • bugatti79
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3
Graduate Question on ε in epsilon-delta definition of limits.
  • Alpharup
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14
Graduate How to Integrate a Function with Steep Rise for Small x?
  • DrDu
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3
Undergrad Minima and Maxima of a multivariable function....
  • fog37
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4
Radius of Convergence for $\sum_{j=0}^{\infty} \frac{z^{2j}}{2^j}$
  • Guest2
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3
Graduate Expressing an integral in terms of gamma functions
  • CAF123
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1
Undergrad How is implicit differentiation performed in calculus?
  • bugatti79
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11
Undergrad Sum of area bounded by the curve
  • luka perkovic
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9
Undergrad A question on plotting functions on a graph
  • #neutrino
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3
High School Is a Line Intersecting at One Point a 1-1 Function?
  • #neutrino
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6
Undergrad A question on plotting functions on a graph
  • #neutrino
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2
Fourier Transform limits problem
  • ognik
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4
Find Fourier series of Dirac delta function
  • ognik
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8
Graduate Analyzing Convergence and Rewriting Sequences: A Mathematical Approach
  • Mappe
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3
Graduate Why Does Factoring Change the Existence of a Limit in Spivak's Problem?
  • Alpharup
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6
Fourier series coefficient problem
  • ognik
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5
How to decompose a fourier series
  • ognik
  • · Replies 9 ·
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9
Calculus: Maximum point for revenue function
  • Doffy
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3
Graduate Is dx ever truly equal to zero in integration theory?
  • iScience
  • · Replies 36 ·
2
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36
Generating function for trigamma^2
  • alyafey22
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7
Is the half interval Fourier series for f(x)=x over (0,L) correct?
  • ognik
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3
Completing the Square in Fourier Transform: Right or Wrong?
  • ognik
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6
Undergrad Approximating logarithmic series
  • 22990atinesh
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12
Graduate Proof of product rule for gradients
  • Alvise_Souta
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4
Undergrad Spivak "root 2 is irrational number" problem
  • Alpharup
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3
Undergrad Can f''(x_0) = 0 if f'(x_0) =/= 0?
  • FaroukYasser
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8
Understanding Fourier Series: Solving a Problem with Sinusoidal Functions
  • ognik
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7
Graduate Curl as the limit vol->0 of a surface integral
  • Odious Suspect
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3
Undergrad Need help with using Leibniz's Rule
  • Astro
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4
Help with Fourier series mistake
  • ognik
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2
Integration by parts with absolute function
  • Mathboi1
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3
Is the Double Factorial Series Convergent with Stirling's Asymptotic Formula?
  • ognik
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6
Undergrad Taylor Expansion to Understanding the Chain Rule
  • TimeRip496
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6
Determine the convergence of the series
  • Nikolas7
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3
Graduate Kleppner/Kolenkow Vector Problem
  • Cosmophile
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5
Prove $\frac{1}{2}<S<1$ in Sequence Challenge
  • anemone
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2
Undergrad Volume of an octagonal dome by using calculus
  • the_dane
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6
Undergrad Chain rule for product of functions
  • smath42
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16
Graduate Can anyone identify this series trick?
  • Deiniol
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2
Finding the Domain of a Function
  • megacat8921
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3
What is the purpose of Approximation?
  • shoshuban
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3
Undergrad Simple differentiation mistake?
  • influx
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3
Graduate Integration of the Stream Function & Velocity Potential
  • influx
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4
Undergrad Is a Tangent Line Defined by a Single Point or Its Surroundings?
  • PcumP_Ravenclaw
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19
Undergrad Leibniz Notation: Understanding Diff. Calculus Anti-Derivatives
  • imjustcurious
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6
Undergrad Is this graph defined at x = 0?
  • PcumP_Ravenclaw
  • · Replies 2 ·
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2
Graduate What is the closed form for the sum of binomial coefficients over any interval?
  • aaaa202
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4
Harish Karakoti's question on Facebook
  • alyafey22
  • · Replies 1 ·
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1
Calculating the area from 1280 subintervals
  • Nemo1
  • · Replies 9 ·
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9
Application of Differentiation - Points of Inflection.
  • Nemo1
  • · Replies 5 ·
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5
Graduate If d>|t-c|>0 satisfies e>|f(t)-L| does d1<d also?
  • Odious Suspect
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8
Max Area of isosceles triangle with perimeter 1
  • GreenGoblin
  • · Replies 12 ·
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12
Find the equation of the tangent and normal to.
  • Nemo1
  • · Replies 4 ·
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4
Integration: Area between two parabolas on a given interval
  • burritth
  • · Replies 4 ·
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4
What is the product of polylogarithms in a series?
  • alyafey22
  • · Replies 4 ·
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4
Formulas for Triangle Perimeter & Height
  • loquetedigo
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1
Undergrad What qualifies as an infinite discontinuity?
  • shinwolf14
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2
Undergrad Concave/convex -- second derivative
  • charlies1902
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8
Graduate Multivalued limit of (i + i/n)^n
  • forcefield
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3
Integration Help: Finding x-coord of Point A with y= bx(x -2)
  • kais001
  • · Replies 3 ·
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3
Undergrad Taylor Series (Derivative question)
  • newbe318
  • · Replies 1 ·
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1
Prove Summation Inequality: $\frac{1}{2n-1} > \sum_{k=n}^{2n-2}\frac{1}{k^2}$
  • MarkFL
  • · Replies 9 ·
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9
Graduate Calculus of variations with circular boundary conditions
  • madness
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4
N27.09 Derivative of tan and phase shift
  • karush
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8
Undergrad How to Derive Complex Equations Using Chain and Product/Quotient Rules?
  • BIOS
  • · Replies 3 ·
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3
What is the 2nd Derivative of y(t)=tan5t?
  • riri
  • · Replies 1 ·
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1
Solve Optimization Problem: Minimize Cost of New Highway
  • thedude23
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2