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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
High School New to Nonlinear Diff. Equations? Ask Here!
  • knockout_artist
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11
9.4.5 Identify the equilibrium values
  • karush
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8
Undergrad Second derivative of a curve defined by parametric equations
  • Mr Davis 97
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3
Solve the initial value problem
  • karush
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4
High School Integration by Substitution Using Infinite Sums
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3
High School Expressions of ##log(a+b), tan^{-1}(a+b),sin^{-1}(a+b)##,etc
  • Kumar8434
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12
Graduate Inverse Laplace transform of F(s)=exp(-as) as delta(t-a)
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7
Undergrad Limits to directly check second order differentiability
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1
Undergrad Noether's Theorem: Confused About Last Step
  • Silviu
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6
Compute Limit: \sqrt[n]{1+x^n}^n
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4
Graduate How to Solve the Fourier Integral in Eq. (27) Involving Position Vectors?
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10
How to Solve Related Rates Problems in Calculus 1
  • harpazo
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8
High School Small big problem with integrals
  • MAGNIBORO
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3
Graduate Integral with an inverse function limit
  • Kvad
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2
Proving $a\, \tan\,x - b\, \tan\,y = a^2 - b^2$ with $\tan(x+y)$ & $\tan(x-y)$
  • kaliprasad
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2
Undergrad Can Taylor series be used to get the roots of a polynomial?
  • Kumar8434
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16
Undergrad Question about integration in physics
  • EddiePhys
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10
Graduate What Are the Different Types of Derivatives in Calculus?
  • observer1
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3
Undergrad Newton's approximation of inverse trig
  • Invutil
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7
High School Average angle made by a curve with the ##x-axis##
  • Kumar8434
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4
Undergrad Can I prove the finiteness of an expression involving hyperreals?
  • Buffu
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23
Sum of Infinite Series: Find 1/sqrt(2)
  • Umar
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2
Graduate Logarithmic divergence of an integral
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1
Undergrad Taylor series to evaluate fractional-ordered derivatives
  • Kumar8434
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3
242t.9.1.15 Use Euler's method to calculate the first three approximations
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9.1.14 Use Euler's method to calculate
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2
Undergrad Multi-dimensional Integral by Change of Variables
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1
Undergrad Why is this function constant in this interval?
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5
Undergrad Integrating both sides of an equation question
  • TomServo
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6
Undergrad How Does Log(z) Expand at Infinity?
  • Belgium 12
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2
What is the Surface of the Equation S88 and How Can it be Graphed Online?
  • karush
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3
Undergrad Can dp/dt Be Found When p(x) Is Inverse?
  • rabbed
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12
Undergrad Is there an equivalent form for arctan?
  • Aristotle
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11
Graduate Taylor/Maclaurin series for piecewise defined function
  • cg78ithaca
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6
Undergrad Solve Challenging Integral with Proven Techniques | x>1 Integer Solution
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7
Undergrad Do limit and differential operators commute?
  • 2sin54
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2
Undergrad How Does the Delta Function Impact Integral Calculations in Physics?
  • CAF123
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20
Undergrad Surface formed by moving area along curved axis
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2
Undergrad How Do I Symbolically Evaluate a Double Integral with an Offset Circle?
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3
Undergrad Closed form solution for this integral
  • Oedipus
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4
How Does the Derivative of a Cubic Function Result in a Tangent Line?
  • tenman
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4
Q5|8.5.17 int of rational expression...
  • karush
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1
Undergrad Proving equivalence between statements about a sequence
  • issacnewton
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9
242t.8.5.9 expand the quotient by partial fractions
  • karush
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3
Undergrad Integrating a Complex Integral using Substitution and Simplification
  • Mr Davis 97
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2
Undergrad Take v(t) and h(t) to make v(h)
  • Adoniram
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9
How Can You Evaluate a Tricky Integral of Sin^5(3x) dx?
  • karush
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3
How do I find partial derivatives with fractional exponents in the Chain Rule?
  • harpazo
  • · Replies 9 ·
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9
What are the new formulas for x and y that will converge to $\sqrt{k}$?
  • ineedhelpnow
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1
Undergrad Continous signals as sums of weighted delta functions
  • LLT71
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8
Undergrad Coefficients in a quotient of sums
  • Sturk200
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2
242t.08.02.09 int of rational expression.
  • karush
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4
Undergrad Proof that lattice points can't form an equilateral triangle
  • Figaro
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5
Undergrad Understand Limits: Why Does ∞1=lim n→∞ (n+1/n-1)?
  • Jarvis88
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5
How to Calculate the Slope of a Line Through Two Points?
  • mathdad
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2
Undergrad How Does the Dirac Delta Function Simplify to f(0) in Integrals?
  • LLT71
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27
Undergrad Derivative with several terms in denominator
  • davidge
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7
242.7x.27 Find the slowest growing and the fastest growing functions
  • karush
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6
How Do I Find a Point on a Curve with a Specific Slope?
  • mathdad
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2
Undergrad A directional, partial derivative of a scalar product?
  • particlezoo
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2
242t.08.02.41 Find the area of the region bounded by
  • karush
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3
Undergrad Convergence Vectors Calculus: Definition
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5
High School How to check if this limit is correct or not?
  • Kumar8434
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5
Undergrad Question about Cross Product and Derivative
  • bwest121
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1
How Do You Find the Absolute Min and Max of a Function on a Triangular Region?
  • riri
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4
Derivative of y w.r.t x: 242.7x.25
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2
How Do You Differentiate \( \arctan(\sqrt{3x}) \)?
  • karush
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2
Graduate How to solve an integral with the Inverse error function
  • matteo86bo
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5
Vector-valued function is smooth over an interval
  • A.Magnus
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1
Calculating Integrals with Antiderivatives
  • mathmari
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6
Integral: Solving the Difficult One
  • Natarajan
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1
Undergrad Question about Complex limits of definite integrals
  • MAGNIBORO
  • · Replies 6 ·
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6
What is the age of the tree to the nearest year?
  • karush
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2
High School Chain rule for variable exponents
  • kolleamm
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7
Undergrad Prove Ramanujan Identity: 3 = \sqrt{1+2\sqrt{1+3\sqrt{1+4\sqrt{1+...}}}}
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5
Derivative and Limit of an Exponential Function
  • Yankel
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3
Graphical Problem with 1st and 2nd Derivaties
  • Yankel
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3
What is the antiderivative of $\frac{1}{x^{1/2}+x^{1/3}}$ for $x>0$?
  • lfdahl
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4
Undergrad Surface parametrization and its differential
  • jonjacson
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6
Undergrad Generalizing the translation operator
  • BlackHole213
  • · Replies 1 ·
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1
Integrating $\sec^2(2x)$: A Puzzler
  • karush
  • · Replies 4 ·
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4
Undergrad Calculating Work Needed to Stretch a Spring: 100J to 0.75m
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5
Demand for a certain Commodity
  • confusedbycalc
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1
Undergrad Epsilon-Delta or Infinitesimal: Which is More Rigorous?
  • observer1
  • · Replies 1 ·
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1
242.7x.01 d/dx of inverse equation
  • karush
  • · Replies 1 ·
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1
Undergrad Evaluating 2D Delta Function Integral - Any Help Appreciated
  • junt
  • · Replies 6 ·
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6
231.13.3.33 calculate the proj_u, and scal_u
  • karush
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2
Undergrad ## \int ~ dx dy dz ~ f(x,y,z)~ \delta (x+y+z-1)##
  • Safinaz
  • · Replies 11 ·
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11
Optimizing Linear Regression Cost Function
  • Dethrone
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3
High School Why does the expression equal the reciprocal of its logarithm?
  • terryds
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1
Solving for dy/dx: $\sqrt{y}\cos^2{\sqrt{y}}$
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6
Calculate $\int sze^z dS$ on Unit Sphere
  • richatomar
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1
Surface Integral of $F$ Over Region V
  • richatomar
  • · Replies 1 ·
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1
Undergrad Can indeterminate limits always be evaluated?
  • Mr Davis 97
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10
Undergrad Product rule in Newton notation?
  • volican
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4
Undergrad Fixed Variables in Partial Derivatives
  • transmini
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1
Undergrad Proofs of Stokes Theorem without Differential Forms
  • Crek
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1
High School Simplifying an exponential with a square root
  • Mr Davis 97
  • · Replies 4 ·
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4
Graduate How to calculate twist rate for a cycloid on a cylinder
  • Rdyno
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2
Undergrad Integrating Sec^3(x) without Absolute Value
  • Mr Davis 97
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2