Calculus Forum

Join experts in discussion of calculus topics. This may include topics on Elementary functions, Calculating limits, derivatives and integrals. Optimization problems and Homework help is available.

Threads

Undergrad Parameterising a line given by two points

  • mrcleanhands
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2

How Do You Integrate (1 - e^(2x)) / e^x?

  • renyikouniao
  • · Replies 4 ·
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4

Answer Lim(x->infinity)e^(-x)coshx and Lim(x->1)[(e^x-1)/In(x)]sinhx

  • renyikouniao
  • · Replies 5 ·
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5

Integrate x/(4-x^4)^0.5

  • renyikouniao
  • · Replies 11 ·
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11

How Do You Solve the Integral of Cos(ln(x))?

  • Pedro1
  • · Replies 5 ·
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5

Graduate Solving a vector equation which seems to be indeterminate.

  • plasmoid
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Undergrad Slope at point X and the next closest value to X

  • Atran
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5

Undergrad How to Disprove a False Limit Using Epsilon-Delta Definition?

  • Alpharup
  • · Replies 4 ·
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4

Use the Ratio Test for Convergence/Divergence

  • Fernando Revilla
  • · Replies 1 ·
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1

Graduate Ito integral of an arbitrary f(Wiener process)

  • saminator910
  • · Replies 1 ·
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1

Optimization problems from Yahoo Answers

  • MarkFL
  • · Replies 3 ·
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Graduate Why does it work only when h tends to zero?

  • mpx86
  • · Replies 3 ·
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3

S N's question at Yahoo Answers regarding revenue maximization

  • MarkFL
  • · Replies 1 ·
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1

Graduate Measurable spaces vs. topological spaces

  • LikeMath
  • · Replies 8 ·
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8

Graduate Is it possible to perform supremum with two parameters in the same function?

  • St41n
  • · Replies 2 ·
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2

Integration in polar coordinates

  • Fernando Revilla
  • · Replies 1 ·
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1

Sunshine's questions at Yahoo Answers regarding solids of revolution

  • MarkFL
  • · Replies 1 ·
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1

Undergrad A question on notation of derivatives

  • Lemniscates
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3

Undergrad When is Multiplying or Composing Functions Useful?

  • armandshamar
  • · Replies 3 ·
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3

Graduate Conservative overdamped harmonic oscillator?

  • inkliing
  • · Replies 2 ·
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2

What is the Velocity of a Body at the Highest Point in Vertical Circular Motion?

  • DrunkenOldFool
  • · Replies 3 ·
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3

Undergrad Graphing and Limits for Improper Integrals

  • Dan350
  • · Replies 1 ·
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1

Graduate Why is the sum of 1/(n2^n) from 1 to infinity equal to log 2?

  • subsonicman
  • · Replies 4 ·
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4

Graduate How Can Division Work with Differential Operators?

  • muzialis
  • · Replies 14 ·
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14

Graduate Chain Rule Variation: Does g Need to be Invertible?

  • BucketOfFish
  • · Replies 8 ·
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8

Reid's question at Yahoo Answers regarding related rates

  • MarkFL
  • · Replies 1 ·
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1

Graduate Why/how does integral of solid angle = pi?

  • ck99
  • · Replies 2 ·
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2

Graduate Integrating Difficult Gaussian Integrals for Multivariate Normal Distributions

  • unchained1978
  • · Replies 4 ·
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4

Graduate Is this supposed to be trivial?, or can it be proved?

  • bobby2k
  • · Replies 5 ·
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5

How to sketch the graph of a function

  • Petrus
  • · Replies 3 ·
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3

Undergrad Why is Pi Irrational for Circles?

  • rajeshmarndi
  • · Replies 38 ·
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38

Sum of a Complex Fraction Sequence

  • anemone
  • · Replies 4 ·
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4

Undergrad Alternating Series Convergence Test

  • cp255
  • · Replies 7 ·
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7

Maximizing trapezoidal area with constraint

  • MarkFL
  • · Replies 1 ·
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1

Graduate Basic Stochastic Calculus Question, why does dB^2 = dt?

  • saminator910
  • · Replies 1 ·
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1

Graduate Vector Transformation in Cartesian and Polar Coordinates

  • Septim
  • · Replies 5 ·
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5

Undergrad How Does x! Compare in Growth to x^2, 2^x, and x^x?

  • cp255
  • · Replies 4 ·
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4

Undergrad Compare Functions: Which is Better?

  • klinmy
  • · Replies 5 ·
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5

Parametrization of the saddle surface z = y² - x²

  • mathmari
  • · Replies 8 ·
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8

Dexter's question at Yahoo Answers regarding related rates

  • MarkFL
  • · Replies 1 ·
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1

Graduate Constant tangential speed along arbitrary parametric curve

  • aaddcc
  • · Replies 3 ·
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3

High School Book recommendations for learning calculus from scratch

  • Abscissas
  • · Replies 6 ·
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6

Undergrad Simple partial derivative question

  • leehufford
  • · Replies 3 ·
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3

The chain rule (General version)

  • Petrus
  • · Replies 3 ·
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3

Undergrad Conic sections vs multivariable functions

  • leehufford
  • · Replies 7 ·
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7

Graduate Writing Fourier Series for Open and Closed Intervals

  • aaaa202
  • · Replies 1 ·
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1

Undergrad Maximizing salt concentration by adding 20% solution to 15% solution

  • Rokas_P
  • · Replies 5 ·
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5

Graduate Fundamental theorem in 2 dimensions.

  • bobby2k
  • · Replies 2 ·
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2

Area of Two Functions: Find the Answer!

  • Petrus
  • · Replies 7 ·
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7

Solving a problem with the shell method

  • Petrus
  • · Replies 11 ·
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11

Undergrad Why multiply by e^{-jωt} in the Fourier transform

  • anhnha
  • · Replies 5 ·
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5

Graduate Does the sum of ln(k/(k+1)) converge or diverge as n approaches infinity?

  • cp255
  • · Replies 1 ·
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Does This Series Diverge Without Using the Limit Comparison Test?

  • VincentP
  • · Replies 2 ·
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2

Undergrad Unlock the Most Challenging Integrals with Jacob

  • pierce15
  • · Replies 32 ·
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32

Undergrad Can a 2nd degree parametric equation be turned into cartesian?

  • mpatryluk
  • · Replies 2 ·
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2

Undergrad Can it be argued that derivatives should be undefined?

  • CuriousBanker
  • · Replies 23 ·
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23

Undergrad How to minimise this function and get initial conditions

  • Bharatisha
  • · Replies 1 ·
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1

High School Are All Equations Considered Differential Equations in Calculus?

  • kevinnn
  • · Replies 8 ·
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8

Graduate Can a 2D object with no thickness have a thousand mile dimension?

  • oahz
  • · Replies 28 ·
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28

Solving 4cos²(x) - 4 = 6cos(x) for real x

  • Petrus
  • · Replies 3 ·
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3

How do Shifts Affect Invertible Functions?

  • renyikouniao
  • · Replies 17 ·
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17

Does ln(x - √(1 + x^2)) really have a real part?

  • SweatingBear
  • · Replies 16 ·
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16

Are f(x)=ax+cos(x) and g(x)=ax+sin(x) Invertible for a<-1?

  • renyikouniao
  • · Replies 9 ·
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9

Undergrad Absolute Exponential Integration

  • M. next
  • · Replies 3 ·
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3

Is understanding limits necessary for senior-level real analysis?

  • SweatingBear
  • · Replies 22 ·
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22

Graduate Solve Series S_n: 1056, 1088, 1120, 1332

  • klen
  • · Replies 2 ·
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2

Undergrad Integrating Fractions with Substitution

  • cp255
  • · Replies 3 ·
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3

High School Understanding Horizontal Trig Graph Translations

  • tg22542
  • · Replies 2 ·
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2

Partial Derivatives of the cosine rule.

  • Kris1
  • · Replies 12 ·
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12

Calculate Integral: $\int_0^1 \frac{(1-x)e^x}{x+e^x}dx$

  • ipaper
  • · Replies 1 ·
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1

Undergrad Basic Multivariable Proof Equating Determinant to dot/cross product

  • CubicFlunky77
  • · Replies 4 ·
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4

Concave Downward Function and Average

  • renyikouniao
  • · Replies 3 ·
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3

Calculating Work Done: Elevator Problem

  • renyikouniao
  • · Replies 7 ·
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7

Find the volume of the solid obtained by rotating the area?

  • renyikouniao
  • · Replies 5 ·
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5

Sarah's question at Yahoo Answers regarding a sinusoidal function

  • MarkFL
  • · Replies 3 ·
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3

Can You Solve These Two Difficult Integrals?

  • sbhatnagar
  • · Replies 4 ·
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4

Men's question at Yahoo Answers regarding a volume of revolution

  • MarkFL
  • · Replies 1 ·
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1

Graduate Work of Carnot Engine integral

  • mathnerd15
  • · Replies 7 ·
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7

Graduate How can Sine Integrals be calculated using polynomial representations?

  • TheDestroyer
  • · Replies 23 ·
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23

Graduate Gradient theorem for time-dependent vector field

  • dEdt
  • · Replies 4 ·
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4

Undergrad Calculus 2: Advice on Summer Learning/Teaching

  • Dan350
  • · Replies 1 ·
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1

Graduate Existence of non-orientable surface parametrized by periodic variables

  • nonequilibrium
  • · Replies 4 ·
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4

How to Solve the Limit lim x→-∞: x²e^x?

  • Petrus
  • · Replies 2 ·
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2
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1

How to use Taylor series to represent any well-behaved f(x)

  • DeusAbscondus
  • · Replies 7 ·
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7

What Does Sigma Notation Tell Us About Evaluating e^x?

  • DeusAbscondus
  • · Replies 1 ·
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1

Summing Infinite Series with Dilogarithms

  • sbhatnagar
  • · Replies 2 ·
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2

Xojessilynox's question at Yahoo Answers involving integration

  • Chris L T521
  • · Replies 1 ·
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1

Undergrad Improper Integrals and Series (convergence and divergence)

  • Lebombo
  • · Replies 3 ·
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3

Graduate How to derive [itex]\lim_{n\rightarrow ∞} \frac{1-r^{N+1}}{1-r}[/itex]

  • Lebombo
  • · Replies 3 ·
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3

Graduate Optimal reinvestment threshold for leveraged forex trading with commissions

  • bozmonster
  • · Replies 9 ·
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9

Undergrad Difference between 2 Sum of n terms of geometric series formulas

  • Lebombo
  • · Replies 1 ·
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1

What is the minimal distance between y=e^x and y=\ln x?

  • anemone
  • · Replies 1 ·
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1

High School Whats the History of the Integral?

  • kevinnn
  • · Replies 4 ·
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4

Undergrad Is Calculus 2 a Good Option for a Summer Course?

  • Dan350
  • · Replies 3 ·
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3

Graduate Numerical solution for an integral equation?

  • Asban
  • · Replies 5 ·
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5

Is this integral evaluation valid?

  • bmanmcfly
  • · Replies 2 ·
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2

Minimum speed (~V3N0M~'s question at Yahoo Answers)

  • Fernando Revilla
  • · Replies 10 ·
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10

Graduate What is the solution for the troublesome integral?

  • muzialis
  • · Replies 4 ·
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4

Summation: Evaluate \sum_{n=1}^{\infty}\frac{a^{n}}{n^{1-m}}

  • bincy
  • · Replies 1 ·
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1