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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
Graduate Interchange of limits and integrals
  • Lajka
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8
Help Me Solve a Math Problem Involving Trapezoidal Cross Sectional Area
  • alane1994
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20
Undergrad Can you construct a sequence of real nonzero numbers whose sum converges to 0?
  • Bipolarity
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10
Help with High-Power Limit Problem
  • Yankel
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3
Graduate Questions on a modern theory of the differential from a gem of an old Calc text
  • MJC684
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What is the equation linking force and extension for a stretched spring?
  • DeusAbscondus
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2
Graduate How to find out [itex]\frac{\partial^{2} y}{\partial t^{2}} [/itex]?
  • iVenky
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1
Graduate What Is the Radius of Convergence for This Rational Function Expansion?
  • mmzaj
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1
Solve Complex Numbers: $z$ | Arg & Modulus Equations
  • DrunkenOldFool
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4
Graduate How can I integrate discrete data without an analytical function?
  • avas
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2
Undergrad What Methods Can Be Used to Prove Sequence Divergence?
  • Bipolarity
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5
Graduate Proving sequence x_t is decreasing
  • peter60185
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1
Graduate E^(-i * x) not well-defined. Why?
  • nigels
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4
Undergrad Question about calculating surface area
  • mathFun
  • · Replies 6 ·
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6
Optimizing Triangle Area on a Circle: Finding the Minimum with Tangents
  • DrunkenOldFool
  • · Replies 2 ·
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2
What is the solution to the Petal Area Problem?
  • DeusAbscondus
  • · Replies 8 ·
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8
Solving for Derivative of 2x^3-x^2+cx+d
  • Chipset3600
  • · Replies 9 ·
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9
Undergrad A question about the L'Hopital's rule
  • Artusartos
  • · Replies 1 ·
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1
When Does the Logarithmic p-Series Converge?
  • skate_nerd
  • · Replies 6 ·
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6
Graduate Limit in two variables polar vs cartisiean differ in result
  • ahmeeeeeeeeee
  • · Replies 11 ·
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11
Undergrad Troubles with Ellipses (Cartesian -> Polar)
  • JProffitt71
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5
Undergrad Looking for Textbook Suggestions
  • wintermute++
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3
Undergrad Second fundamental theorem of calculus viewed as a transform?
  • vanmaiden
  • · Replies 1 ·
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1
Need help with these derivatives
  • rainbowbaconz
  • · Replies 4 ·
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4
Undergrad Writing orthogonal vectors as linear combinations
  • thedemon13666
  • · Replies 3 ·
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3
Graduate What is the Image of the Complex Function f(z)=z+1/z on |z|>1?
  • LikeMath
  • · Replies 1 ·
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1
Help Me Find the Upper Limit of My Homework Question
  • alane1994
  • · Replies 2 ·
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2
Graduate How to Determine Convergence Intervals for Different Laplace Transforms?
  • matematikuvol
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1
Graduate Calculus on Mobius Band: Let L_{θ} Be the Line
  • pswongaa
  • · Replies 1 ·
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1
How to Use the General Slicing Method to Find the Volume of a Tetrahedron?
  • alane1994
  • · Replies 1 ·
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1
Is There a Connection Between Big 'O' Order Symbols and Limits?
  • Poirot1
  • · Replies 13 ·
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13
Graduate A limit of an indexed integral at closed interval
  • BaitiTamam
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2
Integral of Probability Distribution Function
  • name14
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2
Which Points Have Specific Characteristics for f', f'', and f'''?
  • karush
  • · Replies 5 ·
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5
Area between two trigonometric curves.
  • alane1994
  • · Replies 4 ·
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4
Evaluating $f(\alpha)f(\alpha^2)...f(\alpha^{14})$
  • DrunkenOldFool
  • · Replies 3 ·
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3
Solving a Trigonometric Equation
  • alane1994
  • · Replies 11 ·
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11
Undergrad Are All Inflection Points Also Critical Points?
  • daivinhtran
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2
Graduate Proving the Convolution Theorem for Laplace Transform
  • matematikuvol
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5
Repeating decimals (sic) in bases other than 10
  • Dustinsfl
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3
Graduate How can I solve a linear equation with multiple variables in MATLAB?
  • Ramona79
  • · Replies 3 ·
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3
Undergrad Why Doesn't the Derivative of Sphere Volume Yield Circle Area?
  • Psyguy22
  • · Replies 6 ·
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6
Graduate Question about Laurent Series Expansion
  • dumbQuestion
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1
Undergrad What Does Curl Measure in Physics?
  • sadegh4137
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4
Undergrad Differentiated values are treated just like any other variable, right?
  • Juxtaroberto
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1
Volume of a torus, in terms of big radius R and little radius r, washer method
  • skate_nerd
  • · Replies 9 ·
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9
Undergrad Taylor series error term - graphical representation
  • wizkhal
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1
What is the Solution to the 1/3 Sum Problem?
  • Dustinsfl
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2
Graduate Rearranging terms of a conditionally convergent series
  • Nikitin
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2
What is the limit at infinity of (3n+5)/(2n+7)?
  • Dustinsfl
  • · Replies 5 ·
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5
Graduate Numerical differentiation with change of variable
  • diegojolin
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2
Undergrad What is the volume of a sphere?
  • Jameson
  • · Replies 109 ·
4
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109
Undergrad How do Physicists apply Vector Calculus to Physics?
  • saminator910
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3
High School What is a Radical and How Does it Relate to Bizarre Functions?
  • hammonjj
  • · Replies 8 ·
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8
Minimizing Cost: Order Size for Optimal Price
  • karush
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2
Undergrad Is Calculus Really the Most Difficult Form of Math?
  • uperkurk
  • · Replies 20 ·
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20
Undergrad Limit doesn't make sense according to the graph?
  • tahayassen
  • · Replies 4 ·
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4
Graduate Total vs Partial Integration: What Are the Key Differences?
  • superg33k
  • · Replies 7 ·
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7
Rate at which the distance from a plane to a station is increasing.
  • dinogal
  • · Replies 6 ·
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6
Area rotated around x-axis problem
  • DeusAbscondus
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3
Double Integral A₁, -1 - Does it Check Out?
  • Dustinsfl
  • · Replies 1 ·
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1
Find volume when curve rotated about y-axis
  • DeusAbscondus
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4
Undergrad Not able to apply derviatives to a simple situation
  • musicgold
  • · Replies 7 ·
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7
Simplifying [(x2 - 4)(x2 + 3)1/2] - [(x2 - 4)2(x2 + 3)3/2]
  • PaperStSoap
  • · Replies 2 ·
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2
Undergrad Gauss Legendre numerical intergration
  • Sadeq
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4
Graduate What Do the Lowercase Deltas Stand For?
  • Gloyn
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4
Undergrad Arc Length integration always unusually difficult? Any special trick?
  • B3NR4Y
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2
How to Calculate Distance Traveled with Velocity Function
  • alane1994
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4
Undergrad Is there a simple rule for double and multiple integration?
  • JizzaDaMan
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2
Graduate Can we use Taylor expansions to find the series representation of sin(x^(3/2))?
  • Undoubtedly0
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2
Graduate Fitting a Cosine Function to Inflection & Known Derivative Point
  • adamharrybrow
  • · Replies 1 ·
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1
Graduate What's the value of log 1 to the base 1 ? is it defined or not ?
  • vrmuth
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3
*oblique asymptotes of radical expressions
  • karush
  • · Replies 3 ·
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3
Undergrad Does the Limit lim x->a f(x) Exist When f(x) is Defined for x in [a, ∞]?
  • Puky
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7
Undergrad Small confusion about an improper integral example.
  • funcalys
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4
Graduate Solving Complex Trajectory Puzzle: Find m's Path Equation
  • brupenney
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6
Undergrad Solve a limit with the form (x^n)(e^ax) when x approaches to infinity?
  • Wilfired
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3
Undergrad Evaluate partial derivative. chain rule?
  • james1234
  • · Replies 5 ·
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5
Graduate Conversion to closed-form expression with DE's
  • Trifis
  • · Replies 3 ·
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3
Undergrad How can I use Reimann integral to find the area of a circle?
  • Zula110100100
  • · Replies 8 ·
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8
Undergrad Differential of a complex number
  • VaccumEnergy
  • · Replies 3 ·
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3
Graduate What is the role of the principal value in the Cauchy principal value integral?
  • McLaren Rulez
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5
Integration of area between curve and y-axis: transposition question/problem
  • DeusAbscondus
  • · Replies 7 ·
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7
Undergrad Confusing Integration Example: Solving Problems with Constant Factors of n
  • James2
  • · Replies 14 ·
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14
Value of an expression involving complex numbers
  • Uniman
  • · Replies 2 ·
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2
Graduate Mellin's inversion integral, branch cut problem
  • nearlynothing
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1
Undergrad Is ∫1/x^2 - ∫1/x^2 from 0 to 2 Zero or Undefined?
  • chessmath
  • · Replies 1 ·
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1
Undergrad Euler Equation to Compute Extreme?
  • black_hole
  • · Replies 3 ·
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3
What is the Optimal Production Level for Minimizing Average Cost per Unit?
  • karush
  • · Replies 2 ·
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2
Graduate Interpreting path integral averages as measure integrals
  • rs123
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3
Calculate area with double integral.
  • MacLaddy1
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5
Undergrad Sketching graph of f(x) from graph of f'(x)
  • CustardTheory
  • · Replies 3 ·
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3
Max Beam Deflection: Find $x$ Value for $D$
  • karush
  • · Replies 3 ·
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3
Graduate Looking for an idea for proving inequality, probably using binomial theorem.
  • Polychoron
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7
Undergrad How Do You Rewrite a Power Series for Radius of Convergence?
  • Artusartos
  • · Replies 2 ·
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2
High School How to Add Upper and Lower Limits to Integrals in Forum Math Code?
  • James2
  • · Replies 4 ·
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4
Undergrad How Does a Vector Field Affect a Projectile's Path?
  • saminator910
  • · Replies 1 ·
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1
Undergrad Find Limit of Function & 3 Sequence Theorems
  • lalapnt
  • · Replies 5 ·
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5
Calculate Sigma Sums in Excel for Large n
  • alane1994
  • · Replies 1 ·
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1
Graduate Approximation of error function-type integral
  • RedSonja
  • · Replies 2 ·
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2