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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
Graduate Does the Sup/Inf Operator Apply in Vector/Matrix Conditions?
  • pitaly
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2
Undergrad Simple Differentiation - Is this legal / correct method?
  • Sirsh
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2
Undergrad Fourier Transform of a sin(2pi*x)
  • BobP
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7
Graduate Derivative of complex exponential differs by a sign
  • Summer95
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8
Graduate Intuition for sign of third derivative
  • economicsnerd
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8
Graduate I need the solution to an Integral of type f[z]*Log[z]/z
  • Hepth
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3
Undergrad An equality about derivative of a polynomial?
  • td21
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1
Graduate What is a simple proof of this differentiation property?
  • td21
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1
Graduate Questions about operators and commutators
  • maverick_76
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6
Graduate Convergence of a sum over primes
  • Boorglar
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4
Undergrad How Does the Total Derivative Sum Up Changes in Multiple Directions?
  • Agent 47
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7
Undergrad Limits of 1/x Explained: A Calculus Question
  • Samit Chak
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3
Undergrad How to create a function such that area under curve is 250
  • Ocata
  • · Replies 22 ·
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22
Graduate What is meant by "take the derivative of a function"?
  • Mr Davis 97
  • · Replies 7 ·
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7
Is the Variational Principle an introductory example for Calculus of Variations?
  • mathmari
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10
Graduate How to Solve the Scalar Density Integral in Spherical Coordinates?
  • Korbid
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3
What is the maximum of the given function in the closed square $D$?
  • evinda
  • · Replies 8 ·
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8
What is the relationship between arc length and curves in calculus?
  • mathmari
  • · Replies 3 ·
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3
Graduate Understanding Partial Derivatives in Position-Velocity Relationship
  • mwspice
  • · Replies 9 ·
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9
Undergrad Jacobian transformation for finding area
  • Titan97
  • · Replies 1 ·
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1
Graduate Derivative of Dirac Delta Distribution
  • STEMucator
  • · Replies 4 ·
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4
High School Trouble with basic algebra in Calculus 1.
  • Ghostcrown
  • · Replies 3 ·
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3
Undergrad Product Rule Proof: Reasons Why it Won't Work
  • UMath1
  • · Replies 8 ·
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8
Graduate What is the correct range for c in Taylor's Theorem error bound?
  • member 508213
  • · Replies 5 ·
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5
Undergrad Intuitive ways to think of integration and second derivative
  • Maddie1609
  • · Replies 4 ·
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4
Evaluate Sum: $x^4/(x-y)(x-z)+y^4/(y-z)(y-x)+z^4/(z-x)(z-y)$
  • anemone
  • · Replies 2 ·
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2
Power Series: Find First 5 Terms of x^2/(1-5x) - Help Needed
  • dmdenney
  • · Replies 2 ·
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2
Find rate of change (Why is my answer wrong?)
  • carl123
  • · Replies 2 ·
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2
What is the equation of the tangent line at (π/2,1) for sin(xy)=y?
  • karush
  • · Replies 2 ·
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2
How Do You Integrate a Product of Bessel Functions with Polynomial Denominators?
  • oh20elyf
  • · Replies 3 ·
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3
High School What does cosx/x and tanx/x represent?
  • JayCAquino#4
  • · Replies 2 ·
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2
Graduate Understanding the Role of Error Functions in Integrals
  • maverick_76
  • · Replies 3 ·
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3
What is the significance of Calculus of Variations in Classical Mechanics?
  • evinda
  • · Replies 5 ·
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5
Find the values of Δz and dz
  • carl123
  • · Replies 6 ·
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6
Graduate How can I find the antiderivative of this complicated Bessel function?
  • oh20elyf
  • · Replies 1 ·
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1
How to Prove 0.333... < x/y < 0.5 with $x$ and $y$ Defined as Fractions?
  • anemone
  • · Replies 6 ·
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6
Undergrad How to find Sn from Un? (sum of series)
  • terryds
  • · Replies 6 ·
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6
Undergrad What Happens to the Integral of Cosine as k Approaches Infinity?
  • maverick_76
  • · Replies 4 ·
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4
Undergrad Interpreting eiπ in Equation: Radians or Number?
  • forcefield
  • · Replies 12 ·
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12
Graduate Confused About the Chain Rule for Partial Differentiation
  • coca-cola
  • · Replies 4 ·
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4
Convergence of a geometric series
  • Manfred1999
  • · Replies 6 ·
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6
Undergrad Confused about using the integral and infinitesimal?
  • Dufoe
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4
Undergrad Shouldn't Emf generated be Derivative of Flux?
  • Ashman Kumar
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2
Undergrad Which integration technique was used here?
  • duarthiago
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2
Undergrad What are the rules to know when to use absolute value?
  • Fancypen
  • · Replies 5 ·
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5
Graduate Definition clarification for Fourier transform
  • space-time
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1
Graduate How to prove the double integral definition of logarithm?
  • td21
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2
Graduate Helpful Resources for Calc. Analysis
  • Gnomie27
  • · Replies 3 ·
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3
Graduate What is the closed volume integral symbol in Microsoft Word?
  • STEMucator
  • · Replies 5 ·
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5
Undergrad Is there an easy way to relate f, f', and f''?
  • in the rye
  • · Replies 4 ·
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4
Graduate Legendre Second Kind: $Q_n(x)$ Functions
  • jije1112
  • · Replies 1 ·
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1
Graduate Have an Integral that I can't seem to solve
  • maverick_76
  • · Replies 5 ·
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5
Graduate Weird idea (gradients and potentials)
  • DivergentSpectrum
  • · Replies 9 ·
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9
Undergrad What version of the definition of derivative
  • Niaboc67
  • · Replies 1 ·
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1
Graduate How to calculate this tricky integral? Can it be done?
  • will eastman
  • · Replies 15 ·
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15
Undergrad Can Squaring Integrals Simplify Calculus Problems?
  • Ibraheem
  • · Replies 9 ·
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9
How Do You Find the Curvature at (2, 4, -1)?
  • carl123
  • · Replies 2 ·
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2
How to Find the Curvature of r(t)?
  • carl123
  • · Replies 1 ·
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1
Graduate Time derivative of tensor expression
  • gitano
  • · Replies 1 ·
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1
Graduate Integration problem deriving virial theorem
  • Bried
  • · Replies 4 ·
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4
High School Will Skipping Trig Substitution in High School Affect College Math and Physics?
  • Ramanujan143
  • · Replies 14 ·
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14
Find the curvature of the vector
  • carl123
  • · Replies 1 ·
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1
Struggling with a trig indefinite integration
  • iadg87
  • · Replies 2 ·
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2
Points of intersection of two vector curves
  • carl123
  • · Replies 1 ·
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1
Undergrad What is the Curvature of a Line in Calc III?
  • DameLight
  • · Replies 1 ·
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1
Graduate Help proving triangle inequality for metric spaces
  • lucasLima
  • · Replies 8 ·
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8
Graduate Integration algabriac manipulation problem
  • Bried
  • · Replies 2 ·
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2
Graduate How Do Starting Points Affect Series Comparison Tests?
  • PFuser1232
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3
Undergrad Help understanding equation involving a partial derivative
  • Woolyabyss
  • · Replies 4 ·
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4
Are the Intersections of These 3D Curves Ellipses?
  • carl123
  • · Replies 1 ·
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1
Undergrad Finding all vectors <x,z>=<y,z>=0
  • lucasLima
  • · Replies 9 ·
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9
Undergrad Why isn't Un the derivative of Sn in sequence and derivative?
  • terryds
  • · Replies 3 ·
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3
Graduate Can Divergent Series Sums Converge?
  • PFuser1232
  • · Replies 5 ·
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5
What is the Limit as x Approaches 0 for the Absolute Value Function?
  • karush
  • · Replies 7 ·
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7
Graduate Normal and Tangential Component of Vector on a Surface
  • Legolaz
  • · Replies 6 ·
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6
Undergrad Method of Exhuastion for the area of a parabolic segment
  • joey674
  • · Replies 5 ·
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5
Graduate Taylor expansion for matrix logarithm
  • Backpacker
  • · Replies 3 ·
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3
Undergrad How to test if a sequence converges?
  • japplepie
  • · Replies 9 ·
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9
Trouble with Delta Epsilon Problem
  • tfeuerbach
  • · Replies 2 ·
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2
Undergrad How Do You Calculate the Surface Area of a Helix?
  • Legolaz
  • · Replies 12 ·
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12
Graduate Fractional iteration of a function
  • Lord Crc
  • · Replies 1 ·
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1
Undergrad (Question) Trigonometric substitution triangles
  • x86
  • · Replies 4 ·
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4
Undergrad Are hyperbolic substitutions absolutely necessary?
  • PFuser1232
  • · Replies 1 ·
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1
What are the values of $a$ and $b$ in this limit?
  • karush
  • · Replies 4 ·
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4
Graduate Second derivative with parametric equations
  • PFuser1232
  • · Replies 2 ·
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2
Find Min Value of $a^2+b^2+c^2+d^2+(a+b+c+d)^2$ w/ Given Constraint
  • anemone
  • · Replies 9 ·
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9
What is the Limit of a Rational Expression?
  • karush
  • · Replies 6 ·
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6
Undergrad Derivative and function terminology
  • Mr Davis 97
  • · Replies 7 ·
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7
Graduate Can Sketching Reveal the Solution to This Integral?
  • wirefree
  • · Replies 1 ·
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1
Undergrad Help with probably basic integral?
  • BeeKay
  • · Replies 22 ·
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22
How Do You Calculate the Slope to Intercept a Moving Point?
  • AlienNova
  • · Replies 2 ·
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2
Undergrad Are there more flexible formulas for finding the area of surfaces of revolution?
  • PFuser1232
  • · Replies 2 ·
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2
Undergrad Can Excel Help Me Find When a Particle is on the Right of the Centre?
  • 24forChromium
  • · Replies 10 ·
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10
Undergrad Is there an easier way to integrate this equation using a triangle?
  • Philosophaie
  • · Replies 9 ·
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9
High School Why Can't We Cancel (x-2) in the Inequality 2(x+3)(x-2)/(x-2)≥0?
  • LogarithmLuke
  • · Replies 8 ·
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8
Undergrad Limits of frac(x)/x: Is WolframAlpha Wrong?
  • SataSata
  • · Replies 4 ·
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4
Undergrad Why do we assume certain values for theta and x in trigonometric substitutions?
  • PFuser1232
  • · Replies 2 ·
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2
High School Cross Product of Parallel Vectors is the zero vector (why?)
  • Brandon Hawi
  • · Replies 11 ·
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11
Exponential Growth and Differential Equation
  • hongyuan94
  • · Replies 7 ·
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7
Undergrad Using different limit laws give different answer?
  • FaroukYasser
  • · Replies 8 ·
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8