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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
High School How to integrate a polar graph with respect to radius
  • grahas
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17
Undergrad Solving Legendre's Equation with Leibnitz Formula
  • davidge
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3
Green's Theorem with Singularities
  • Umar
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3
Undergrad Small angle expansions for sin, cos, and tan
  • Mr Davis 97
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4
High School Correctness of Equations in Electromagnetism Textbook
  • DesertFox
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7
High School Derivation of exact differential
  • kidsasd987
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1
W.8.8.19 Integration of 2 to \infty
  • karush
  • · Replies 7 ·
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7
Finding the Area of a Disc with Integration Methods
  • markosheehan
  • · Replies 6 ·
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6
Graduate Integration by parts of a differential
  • maistral
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5
Definite integral challenge ∫cos2017xsin2017xdx
  • lfdahl
  • · Replies 3 ·
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3
Integrating the Square Root of a Fraction with a Radical
  • karush
  • · Replies 3 ·
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3
How Do You Express and Evaluate This Integral Using Partial Fractions?
  • karush
  • · Replies 6 ·
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6
Undergrad Must functions really have interval domains for derivatives?
  • Oats
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2
High School Why is integration with dx in the denominator undefined?
  • Aows
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6
Is the Limit of Regular Polygon Areas π? Using Infinitesimal Analysis to Prove
  • lfdahl
  • · Replies 8 ·
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8
High School Second derivative differential equations in terms of y?
  • Saracen Rue
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4
Undergrad Why Is There No Maclaurin Expansion for Log(x) Compared to Log(x+1)?
  • Mr Davis 97
  • · Replies 7 ·
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7
Find the limit of 1/(n•cosn) as n tends to +∞.
  • harpazo
  • · Replies 2 ·
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2
7.6.16 Find the derivative of y with respect to x
  • karush
  • · Replies 6 ·
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6
Undergrad How to calculate the area under a curve
  • JG FRANKO
  • · Replies 3 ·
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3
Divergence Theorem and shape of hyperboloid
  • Mountain1
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1
Undergrad Manipulate this summation with Exp
  • Adoniram
  • · Replies 9 ·
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9
Undergrad Calculating area of multiple connected circles
  • magnetics
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2
242.7x.25 Find the derivative of y with respect to x
  • karush
  • · Replies 16 ·
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16
Partial fractions ( part of a logistic equation)
  • adzix
  • · Replies 2 ·
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2
Testing Convergence, Calculus II
  • joypav
  • · Replies 1 ·
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1
High School Derivative with the double cross product
  • Vectronix
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1
Can you find $f^{(n)}(1)$ with the given conditions?
  • lfdahl
  • · Replies 2 ·
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2
High School Why Is My Second Derivative Calculation for Taylor Expansion Incorrect?
  • knockout_artist
  • · Replies 1 ·
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1
Undergrad Why is [x^x^x]' NOT (xln(x)^2+ln(x)+xln(x)+1)*x^(x+x^x)?
  • NotASmurf
  • · Replies 5 ·
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5
High School Square root differential problem
  • knockout_artist
  • · Replies 6 ·
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6
Undergrad Fredholm integral equation with separable kernel
  • Jianphys17
  • · Replies 7 ·
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7
S6.12.4.35 Find the volume of the parallelepiped
  • karush
  • · Replies 4 ·
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4
Converging Geometric Series with Negative Values?
  • Lancelot1
  • · Replies 1 ·
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1
Graduate Meaning of Sigma in Laplace transform
  • apalopohapa
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2
High School Why Do Different Methods Yield Different Results for ∫0 T sin²(ωt) dt?
  • Const@ntine
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2
206.08.04.59 int completing the square
  • karush
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2
Gradients of curves to find average growth rate between two points
  • srg263
  • · Replies 2 ·
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2
High School Proof that (x^n)/n has a limit of 0 at infinity
  • Derek Hart
  • · Replies 3 ·
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3
Graduate IS THERE A FENCEPOST ERROR WHEN CALCULATING MASS FOR A CONTINUOUS DISTRIBUTION?
  • LaplacianHarmonic
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2
206.08.08.10 integral from --\infty
  • karush
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4
Undergrad Why Does div[grad(1/r)] Equal -4πδ(r vec)?
  • cristianbahena
  • · Replies 2 ·
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2
Evaluate the sum ∑n/[n^4+n^2+1]
  • lfdahl
  • · Replies 3 ·
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3
High School Calculus of variation. Minimum surface
  • knockout_artist
  • · Replies 2 ·
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2
How Do You Evaluate ∫∫∫ Over an Ellipsoid Using Change of Variables?
  • harpazo
  • · Replies 1 ·
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1
High School Is 0.999... Equal to 0: A Discussion on Convergence and Infinite Series?
  • Seasons
  • · Replies 44 ·
2
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44
Change of Variables in Multiple Integrals
  • harpazo
  • · Replies 2 ·
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2
How Can I Simplify This Tangent Line Equation?
  • Teh
  • · Replies 4 ·
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4
Would Partial Fractions Simplify This Integral?
  • karush
  • · Replies 8 ·
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8
Finding the Range of a Function Using Graphs
  • mathdad
  • · Replies 6 ·
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6
Graduate Integral representation of Euler constan
  • bbailey
  • · Replies 1 ·
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1
Undergrad Integrate Over Domain? | General Integration Questions
  • Chemmjr18
  • · Replies 6 ·
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6
Find Power Series Representation for $g$: Interval of Convergence
  • karush
  • · Replies 5 ·
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5
High School Find ##f(x)## such that f(f(x))=##log_ax##
  • Kumar8434
  • · Replies 60 ·
3
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60
Undergrad What did Newton mean by "Ghosts of Departed Quantities"
  • INTP_ty
  • · Replies 4 ·
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4
High School Solving Integral Equation: $\frac{\sin\left(x\right)}{\cos^{3}\left(x\right)}$
  • Saracen Rue
  • · Replies 4 ·
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4
Solving 2.43: Drawing Diagrams & Vector Lengths
  • Adhil
  • · Replies 9 ·
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9
Undergrad Understanding a Time Integral for x1 and x2
  • MikeSv
  • · Replies 4 ·
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4
High School Solving Indefinite Integrals: A Beginner's Guide
  • zeldaspurpose
  • · Replies 1 ·
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1
What is the ratio of PA to PB on a semicircle with points A and B on the x-axis?
  • mathdad
  • · Replies 2 ·
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2
Undergrad Multiplying by dr/dt and integrating with respect to t
  • BearY
  • · Replies 2 ·
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2
Projectile Fired: Find Time of Flight at Max Height
  • markosheehan
  • · Replies 1 ·
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1
Graduate What is the meaning of tensor calculus?
  • Vance Grey
  • · Replies 5 ·
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5
Working out where a function is non-negative
  • srg263
  • · Replies 4 ·
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4
Undergrad Derivative When Substituting Variables
  • Drakkith
  • · Replies 4 ·
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4
Undergrad Finding Critical Points of a Quartic Function: A Scientific Approach
  • 1plus1is10
  • · Replies 4 ·
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4
How Are Partial Derivatives Calculated for Multivariable Functions?
  • kupid
  • · Replies 4 ·
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4
Approximating the value of a function
  • Yankel
  • · Replies 1 ·
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1
Two tangent at the same point of a function
  • chrisgk
  • · Replies 3 ·
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3
Tell me, must I use m = (y2 - y1)/(x2 - x1), where m is 1/4?
  • mathdad
  • · Replies 12 ·
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12
Finding a Min or Max point without knowing the function
  • Yankel
  • · Replies 3 ·
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3
High School Not following an integral solution
  • SamRoss
  • · Replies 1 ·
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1
Find the area between the curve and the x-axis
  • b4rn5ey
  • · Replies 2 ·
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2
Finding the Equations of Tangent Lines to a Circle
  • mathdad
  • · Replies 10 ·
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10
Can you find the slope of a line passing through two points with this formula?
  • mathdad
  • · Replies 2 ·
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2
Moments of Inertia & Radius of Gyration
  • harpazo
  • · Replies 14 ·
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14
Have you tried Demystified Calculus for a more student-friendly approach?
  • harpazo
  • · Replies 2 ·
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2
How do I evaluate this triple integral for 2ze^(-x^2) over the given bounds?
  • harpazo
  • · Replies 6 ·
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6
High School Is dy/dx of x2+y2 = 50 the same as dy/dx of y = sqrt(50 - x2)?
  • Blockade
  • · Replies 3 ·
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3
High School Definite integrals with +ve and -ve values
  • HuskyLab
  • · Replies 5 ·
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5
High School Differentiating by two different variables -- when is it okay?
  • SamRoss
  • · Replies 2 ·
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2
High School Don't follow one small step in proof
  • SamRoss
  • · Replies 2 ·
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2
Find x- and y- Intercepts....1
  • mathdad
  • · Replies 8 ·
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8
Find x- and y- Intercepts....4
  • mathdad
  • · Replies 5 ·
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5
Find x- and y- Intercepts....3
  • mathdad
  • · Replies 2 ·
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2
Find x- and y- Intercepts....2
  • mathdad
  • · Replies 2 ·
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2
Undergrad Havil's book "Gamma" page 57, formula
  • Lapidus
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1
High School Why Does ln(y) = ln(bεax) Cause Issues in Derivation?
  • Elias Waranoi
  • · Replies 3 ·
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3
Undergrad Lorentzian line shape integration
  • Josh1079
  • · Replies 5 ·
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5
High School Domain of Derivatives: Is f'(x)<=f(x)?
  • Saracen Rue
  • · Replies 3 ·
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3
Undergrad Understanding the Dirac Delta function
  • redtree
  • · Replies 3 ·
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3
Undergrad Prove Complex Integral: $\int_m^\infty\sqrt{x^2-m^2}e^{-ixt}dx$
  • Silviu
  • · Replies 1 ·
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1
Undergrad Is it possible to find the limit of (1+1/x)^x as x approaches -infinity?
  • manjuvenamma
  • · Replies 25 ·
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25
How can i check if this sum is converges?
  • DrMath1
  • · Replies 1 ·
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1
Finding Intersection Points Between Circle & Line
  • Lancelot1
  • · Replies 4 ·
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4
Finding a parameter for which a line is orthogonal to a curve
  • Lancelot1
  • · Replies 1 ·
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1
17.1.08 y''+100y=0 Find the general solution of the given equation?
  • karush
  • · Replies 8 ·
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8
Berk's question via email about an antiderivative
  • Prove It
  • · Replies 1 ·
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1
How to Set Up a Triple Integral for Volume Calculation?
  • harpazo
  • · Replies 8 ·
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8
Tilting a circle or ring over backwards creates an ellipse....
  • Pogster
  • · Replies 1 ·
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1