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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
Undergrad Integral change of variables formula confusion
  • SchroedingersLion
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Undergrad Can I always think of derivatives this way?
  • Ahmed1029
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2
Graduate Series expansion of ##(1-cx)^{1/x}##
  • Arman777
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3
Undergrad Spivak, Ch. 20: Understanding a step in the proof of lemma
  • zenterix
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1
High School Let f_n denote an element in a sequence of functions that converges
  • Eclair_de_XII
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7
High School What is the role of dx in mathematical and scientific calculations?
  • anonymous24
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29
5.5.2 average value of sqrt{x} [0,4]
  • karush
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High School Where Did My Neglect of High-Order Terms Go Wrong in Integral Sums?
  • Mike_bb
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4
Undergrad Taming a Divergent Series -- But how does it work?
  • Swamp Thing
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14
High School Is this identity containing the Gaussian Integral of any use?
  • MevsEinstein
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8
Undergrad Inequality with integral and max of derivative
  • RaamGeneral
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3
Evaluating $\iint\limits_{\sum} f \cdot d\sigma $ on Cube S
  • WMDhamnekar
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3
Undergrad Open interval or Closed interval in defining convex function
  • junyoung
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4
High School How to write this in terms of ##\zeta (x)##?
  • MevsEinstein
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5
Undergrad Reasoning behind Infinitesimal multiplication
  • Chenkel
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22
Undergrad Properties of Line Integrals question
  • WMDhamnekar
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2
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38
Graduate Vector analysis question. Laplacian of scalar and vector field
  • LagrangeEuler
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7
Undergrad How Does Gaussian-Legendre Quadrature Approximate Non-Polynomial Functions?
  • FranzS
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2
Graduate Solve Line Integral Question | Get Math Help from Physics Forums
  • WMDhamnekar
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5
How to find F(x,y) for $f(x,y)= h(y)\hat{i} + g(x)\hat{j}?$
  • WMDhamnekar
  • · Replies 11 ·
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11
Undergrad What is the equation for line integrals involving the gradient of a function?
  • WMDhamnekar
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3
Graduate How to Derive a Closed Form for a Double Sum with Stochastic Variables?
  • tworitdash
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5
Proving $\displaystyle\int_C \vec{F}\cdot d\vec{r} = 0$ with Closed Curve
  • WMDhamnekar
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6
Undergrad Robert Adams textbook: Acceleration example
  • bigmike94
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7
How to prove this corollary in Line Integral using Riemann integral
  • WMDhamnekar
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1
What is the Basic Idea of Limits in Calculus?
  • nycmathguy
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4
5.2.1 vol of sin x^2 ; 0\le x \le \dfrac{\pi}{2}
  • karush
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2
Undergrad Area of a Circle: Solving the Equation
  • Vector1962
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3
High School How to merge the sum and ##x^n##?
  • MevsEinstein
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10
High School Can the continuity of functions be defined in the field of rational numbers?
  • Eclair_de_XII
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5
High School Representation of infinitesimals in different ways
  • Mike_bb
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2
Minimum of product of 2 functions
  • sarrah1
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2
Graduate A discrete version of the normal distribution
  • Ad VanderVen
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2
Undergrad How do I compute the second derivative of a one-dimensional array?
  • btb4198
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2
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42
Antidifferentiation by Substitution
  • bunnypatotie
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8
Undergrad Is this integral using change of variables technique correct?
  • WMDhamnekar
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1
Undergrad Which of the two answers is correct?
  • WMDhamnekar
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7
Integrate 3/(x(2-sqrt(x))) - No Partial Fractions
  • araz1
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5
Undergrad How Do You Integrate Expressions Like These?
  • askor
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6
How to use change of variables technique here?
  • WMDhamnekar
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2
Graduate Curl in cylindrical coordinates -- seeking a deeper understanding
  • LagrangeEuler
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11
Undergrad Solve for ##n## in ##\frac{1}{(T+\frac{1}{U^{1/n}})^n} = G##
  • MevsEinstein
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5
Triple Integrals: Finding Volume of Solid S Bounded by Planes
  • WMDhamnekar
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5
*Volume of a cone change of rate of volume with respect to h and r
  • karush
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8
Undergrad Calculus of Variations on Kullback-Liebler Divergence
  • Master1022
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3
Undergrad I want to know which software was used to create vector calculus graph
  • Alexanddros81
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2
High School Why is Delta y not equal to dy for infinitesimally dx on the graph?
  • Mike_bb
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8
How to Solve the IVP Using an Integration Factor?
  • hiyum
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6
High School Why do I not understand what seems to be basic Calculus?
  • mcastillo356
  • · Replies 11 ·
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11
Graduate What will be value of this differential? Kindly help and explain
  • ssafdarpk
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1
Graduate Multiplying divergent integrals using Hardy fields approach
  • Anixx
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3
High School Mean-Value Theorem, Taylor's formula, and error estimation
  • mcastillo356
  • · Replies 3 ·
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3
Solving the Slant Asymptote of $$\frac{{x}^{3}-5{x}^{2}+4x}{-4{x}^{2}+36}$$
  • karush
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7
Undergrad Can you solve a Disk, Washer, Shell method problem without drawing a graph?
  • Vividly
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4
Insights A Novel Technique of Calculating Unit Hypercube Integrals
  • benorin
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1
13.3.2 What is the 50th term of the sequence
  • karush
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3
Undergrad Calculating the surface area of a sphere using dA
  • annamal
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2
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33
Tricks for Saving Money on Groceries
  • bearn
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4
Undergrad High schooler Develops new Integration Technique
  • jedishrfu
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39
High School Problem with the concept of differentiation
  • rudransh verma
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46
Graduate Vector analysis and distributions
  • LagrangeEuler
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High School What is this equation called and why is it regarded as beautiful?
  • Physics Slayer
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4
High School Is it possible to find the integral of ##f(x)/x^2##?
  • MevsEinstein
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8
Maxima and Minima in calculus
  • WMDhamnekar
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3
High School Why 1 / ∞ = 0 but ∞ * 0 is not equal to 1?
  • danielassayag
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2
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44
51 How far will the car travel in 10 sec
  • karush
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2
Undergrad Time derivatives in variational calculus
  • feynman1
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15
Integrating Factor Method for Solving y' + y = e^{-2t}
  • hiyum
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3
-s2.9 parabola....vertex, open direction, increasing, decreasing, zeros
  • karush
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2
- Length of curve to 4 decimal pl
  • karush
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5
-12.5.2 Find Parametric eq for line segment from (-2,18,31) to (11,-4,48)
  • karush
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3
How would you approach this integral?
  • Lorena_Santoro
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2
1.3 find dx of (7+9x-6\sqrt{x})/x
  • karush
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4
High School Linearization of a function error viewed with differentials
  • mcastillo356
  • · Replies 14 ·
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14
Undergrad Keisler Elementary Calculus: computing standard parts of expressions
  • rstor
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26
Undergrad How Can Nested Summation Functions Be Simplified or Reversed?
  • ReubenDS
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6
Undergrad Curiosity: there exists the exponential integral?
  • Ssnow
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3
High School This CAN'T be true (Is my proof that 1=0 correct?)
  • MevsEinstein
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8
Understanding Continuous Functions: Examining f'(7) Undefined
  • bearn
  • · Replies 9 ·
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9
Undergrad {Edit-Solved} Confirmation requested on deriving functions from graphs
  • warhammer
  • · Replies 4 ·
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4
Graduate Help needed with derivation: solving a complex double integral
  • Bart Bas
  • · Replies 1 ·
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1
Graduate Physical interpretation for this? (dynamics of Newton's method)
  • Unkraut
  • · Replies 1 ·
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1
Graduate Rayleigh Ritz and inner products
  • member 428835
  • · Replies 8 ·
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8
Undergrad Looking for Guarantees that the method of fixed-point iteration will work
  • mcastillo356
  • · Replies 22 ·
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22
Undergrad Is the sign of the integral of this function negative?
  • Rlwe
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2
Undergrad Approximating discrete sum by integral
  • Kashmir
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6
Undergrad Mean value theorem - prove inequality
  • physics1000
  • · Replies 19 ·
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19
Undergrad How Does the A/B Relationship Connect to Geometric Series?
  • Jehannum
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2
High School Derivative of Square Root of x at 0
  • mopit_011
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3
Graduate Prove a formula with Dirac Delta
  • Salmone
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3
High School How to express ##3^{\sqrt(2)}## in terms of natural logarithms
  • MevsEinstein
  • · Replies 10 ·
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10
High School Understanding about Sequences and Series
  • Vividly
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3
Undergrad Why Does Tax-Deferred Compounding Offer a Financial Edge Over Annual Taxation?
  • BWV
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4
Limit Laws and Techniques: What is the difference between left and right limits?
  • Tracy18
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2
Undergrad What Exactly is Step Size in Gradient Descent Method?
  • Dario56
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3
Undergrad Absolute difference between increasing sum of squares
  • JohnnyGui
  • · Replies 22 ·
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22
Graduate Simplifying a double summation
  • Ad VanderVen
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3
-7.8.98 amplitude period PS VS graph. of cos eq
  • karush
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5
How Can the Given Definite Integral Identity Be Proven for Any Natural Number n?
  • lfdahl
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8
Undergrad Explanation and clarifications in epsilon-delta limit proofs
  • bamajon1974
  • · Replies 4 ·
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4