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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
Undergrad What are the insights into the Total Derivative formula?
  • quickAndLucky
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6
High School Intermediate Value Theorem and Synthetic Division
  • opus
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4
Undergrad Why is dθ/dt Always in Radians?
  • Seung Tai Kang
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11
Solving Curvilinear Motion: Find Velocity at t=3s
  • NotaMathPerson
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11
Undergrad Where does the gradient operator come from?
  • I_laff
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7
Undergrad Special Functions: Complete Answers?
  • Mr Davis 97
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1
Undergrad Arc length constant, despite varying the period via varying amplitude
  • nomadreid
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2
Undergrad A question about the Frénet–Serret Apparatus
  • swampwiz
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1
Problem about Rodrigues' formula and Legendre polynomials
  • Another1
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1
High School Basic Question about absolutely continuous functions
  • Levi Franco
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10
Undergrad Derivative of this function is injective everywhere
  • kent davidge
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9
Undergrad Indefinite and definite integral of e^sin(x) dx
  • Emmanuel_Euler
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11
High School Conversion of parametric form to polar for the rose curve
  • Alphonso2001
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3
Euler–Mascheroni constant How to Solution
  • Another1
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3
Undergrad Smoothing Numerical Differentiation Noise
  • roam
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28
Undergrad Product of two 2D smooth functions
  • Telemachus
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2
Graduate Constrained variational problem
  • member 428835
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4
Undergrad Can we use removable discontinuities to extend a function to the entire plane?
  • FallenApple
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11
Undergrad Integration - Projectile Motion w/ Air Resistance
  • crastinus
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5
High School Area under a sine integral graph
  • Saracen Rue
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8
Find Velocity of Particles: Indefinite Integrals
  • Madu
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2
Undergrad Normalization of integral bounds
  • Mr Davis 97
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1
High School Can you deduce ##\tan(\theta) = \frac {df} {dx}## from this graph?
  • I_laff
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2
Undergrad Test for dependence/independence of multiple variables
  • mishima
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5
Undergrad Finding new region for double integral
  • Mr Davis 97
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7
Undergrad Del operator in a Cylindrical vector fucntion
  • TheColector
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2
Undergrad Integral of polynomial times exp(-x^2)
  • Mr Davis 97
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5
Graduate Derivation of a complex integral with real part
  • shardur
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5
High School Ambiguity w/ Newton's dot notation + vector-magnitudes
  • SiennaTheGr8
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1
Undergrad Different series than Taylor series for a function
  • Mr Davis 97
  • · Replies 9 ·
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9
High School Adding Sine and Cosine Waves- How to get formula
  • opus
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6
High School Integration Basics: Uses & Benefits
  • Mayukh Sen
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5
Undergrad I want to know whether there is any such theorem in maths
  • Atharva
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1
Graduate Which Boundary Conditions Affect the Green's Function Construction?
  • member 428835
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4
Undergrad Directional Derivative demonstration
  • mech-eng
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10
Undergrad Is the Dirichlet integral a shortcut for solving this difficult integral?
  • Mr Davis 97
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4
Undergrad Find the constant value of the difference
  • Mr Davis 97
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4
Undergrad Analyzing the Convergence of a Geometric Series
  • Mr Davis 97
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12
Undergrad Find input values for smallest function amplitude
  • TheFistGuy
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3
Undergrad Whether root should be positive or negative
  • Mr Davis 97
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6
Jacobian of the transformation T:x=u, y=uv
  • karush
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2
Undergrad Analyzing an Integral Solution for Exponential Integral with Imaginary Numbers
  • EngWiPy
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6
Undergrad Is the sign in this integral correct?
  • EngWiPy
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9
Undergrad Finding the Summation Equivalent of a Product
  • EngWiPy
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11
High School How integration can find the summation of infinitely many rectangles?
  • Habib_hasan
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2
Undergrad What is dx, dy and dz in spherical coordinates
  • LSMOG
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7
Graduate Derivative of argmin/argmax w.r.t. auxiliary parameter?
  • aphirst
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1
Undergrad Working backwards from the Area Under a Curve?
  • mikejm
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7
Undergrad Surface area of a revolution, why is this wrong?
  • CollinsArg
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2
Is Differentiability at the Origin Determined by Partial Derivatives?
  • mathmari
  • · Replies 20 ·
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20
Calculating Derivative of Integral w/ Chain Rule
  • mathmari
  • · Replies 9 ·
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9
Can we find the interior of the given curve using Green's theorem?
  • evinda
  • · Replies 14 ·
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14
Undergrad Is the Arctan Convergence Rate Claim Valid for Positive Values of a, b, and x?
  • jostpuur
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2
Undergrad A rigorous definition of a limit and advanced calculus
  • gibberingmouther
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8
What is the Limit of the Hankel Determinant in a Matrix Challenge Problem?
  • MountEvariste
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2
Undergrad Approximating different functions
  • kent davidge
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3
15.4.20 volumn via triple integrals
  • karush
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1
Calculate Area of Tree Structure (Wondering)
  • mathmari
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17
How is the Change in Limits from (1) to (3) in this Calculus Problem Explained?
  • karush
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6
[ASK] Find 1/(1)+1/(1+2)+1/(1+2+3)+…+1/(1+2+3+…+2009)
  • Monoxdifly
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1
Undergrad How to derive this log related integration formula?
  • gibberingmouther
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2
[ASK] Find 1/(1×2)+1/(2×3)+1/(3×4)+…+1/(2009×2010)
  • Monoxdifly
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1
Undergrad Can Two Different Functions Have the Same Output for a Single Point?
  • kent davidge
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3
High School When do we use which notation for Delta and Differentiation?
  • shintashi
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12
High School Something Fun I Stumbled Across
  • Thinkaholic
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3
Undergrad What Happens When You Differentiate Euler's Formula?
  • ADDA
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11
T.15.28 Find the volume of the region
  • karush
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12
High School Methods of integration: direct and indirect substitution
  • donaldparida
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4
High School How to find a length of a "radius" not centered in a circle?
  • hm_tested
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2
Finding the Tangent Line to a Parametric Curve at t=\frac{\pi}{4}
  • TheFallen018
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4
Integration Basics: Axioms & Answers
  • roni1
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5
Undergrad Convergence of ##\{\mathrm{sinc}^n(x)\}_{n\in\mathbb{N}}##
  • Wuberdall
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3
Undergrad What is the exponential decay equation for a bouncing ball?
  • wolf1728
  • · Replies 6 ·
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6
High School I Feel Weird Using Integral Tables
  • Thinkaholic
  • · Replies 12 ·
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12
Application of Differentiation Problem - Need help
  • Lyle1
  • · Replies 2 ·
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2
Undergrad Differentiating vector dot product
  • dyn
  • · Replies 6 ·
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6
Graduate How to Approach Solving a Complex Trigonometric Integral?
  • Excom
  • · Replies 2 ·
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2
Find the value of the iterated integral
  • erikgelfat
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2
Undergrad Gabriel's Horn and Sum of Infinite Fractions: Contradiction or Connection?
  • isukatphysics69
  • · Replies 6 ·
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6
Is infinity / infinity equal to 1?
  • pradyumna1974
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5
Change of variables/ Transformations part 2
  • Joe20
  • · Replies 2 ·
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2
How Do You Determine the Direction for a Specific Directional Derivative Value?
  • Joe20
  • · Replies 3 ·
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3
Can someone help me solve these problems?
  • khokababu
  • · Replies 1 ·
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1
Undergrad Demystifying the Chain Rule in Calculus - Comments
  • PeroK
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7
Proving $\int_{0}^{\infty}{\tanh^2(t)\tanh(2t)\over t^2}\mathrm dt=2\ln 2$
  • Tony1
  • · Replies 1 ·
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1
Five, Phi and Pi in one integral = −5ϕπ
  • Tony1
  • · Replies 3 ·
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3
Graph y=g(x): Sketch for [0,5] \implies R
  • Katsa333
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2
Integral of sine = 27/2+ln^2(2)+ln(2)
  • Tony1
  • · Replies 3 ·
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3
Undergrad Limit of Extension: Can Function Have Different Limit?
  • Danijel
  • · Replies 6 ·
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6
Graduate How to Convert a Complex Logarithm to a Complex Exponential
  • CalcExplorer
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5
Level Curves and Partial Derivatives
  • Lancelot1
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3
Graduate Getting a finite result from a non-converging integral
  • hideelo
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2
Undergrad Independent arguments of dilogarithms
  • CAF123
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6
Undergrad Decomposing a Certain Exponential Integral
  • rocdoc
  • · Replies 13 ·
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13
Undergrad The Relationship Between Angular and Cyclic Frequency in Fourier Transform
  • Kenny_L
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2
Undergrad Video (analytic continuation) seems to mix 4-D & 2-D maps
  • nomadreid
  • · Replies 8 ·
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8
Can the Partial Sum of a Difficult Series be Solved with Induction?
  • MarkFL
  • · Replies 6 ·
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6
Undergrad How to understand and visualize the Bufferfly diagram in FFTs
  • ADDA
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2
Undergrad What Causes Repetition in Fourier Transforms of Audio and Visual Data?
  • mertcan
  • · Replies 12 ·
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12
Not sure how to even start this question. Maximizing theta
  • Corey9078
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2