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 Question on basic trig substitution with x = sin theta

  • RoboNerd
  • · Replies 12 ·
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12

Undergrad Proving the limit of sinx/x as x approaches 0 equals 1

  • Terrell
  • · Replies 2 ·
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2

Graduate FFT phase result interpretation?

  • Gauzi
  • · Replies 6 ·
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6
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4

Effie's question via email about a volume by revolution

  • Prove It
  • · Replies 1 ·
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1

Water draining from a container: relating volume, surface area and time

  • Nemo1
  • · Replies 14 ·
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14

High School Why do we put the dot multiplication symbol when integrating

  • Jatin Kaushal
  • · Replies 3 ·
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3

Calculating Straight Line Distance from A to B

  • wonder1
  • · Replies 3 ·
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3

How Do You Evaluate ∫x²√(1-x²) dx Using Trig Substitution?

  • karush
  • · Replies 9 ·
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9

Undergrad Question on Calculus of variations formalism

  • guitarphysics
  • · Replies 2 ·
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2

High School What would the "correct" way of doing this integral be?

  • EddiePhys
  • · Replies 11 ·
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11

Arc length and volume of revolution for hyperbolic functions

  • Nemo1
  • · Replies 12 ·
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12

Undergrad Use Rolle's theorem to show repeated root has zero gradient

  • Happiness
  • · Replies 20 ·
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20

How do I find the integral of x^3/(x^2+4)?

  • karush
  • · Replies 8 ·
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8

Undergrad If f(c) = f'(c) = 0, is f(x) = (x−c)^m h(x) with m > 1?

  • Happiness
  • · Replies 3 ·
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3

Undergrad Approximation to sqrt(1+(d^2)/(x^2))

  • MOHD ZAKI
  • · Replies 3 ·
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3

Undergrad Divergence theorem and closed surfaces

  • mr.tea
  • · Replies 2 ·
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2

Undergrad Writing sin(3x-x₀) as a Fourier series

  • sa1988
  • · Replies 5 ·
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5

Do you solve the Riemann sum first then take the limit?

  • Nemo1
  • · Replies 2 ·
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2

Graduate Does My Understanding of Tensor Calculus and Divergence Look Correct?

  • member 428835
  • · Replies 4 ·
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4

How Does Changing the Sign of a Constraint Affect Lagrangian Solutions?

  • Knore88
  • · Replies 19 ·
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19

How to Evaluate the Integral of the Square Root of 9+4x^2?

  • karush
  • · Replies 12 ·
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12

High School Making a definite integral equal and indefinite integral?

  • Saracen Rue
  • · Replies 4 ·
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4

Undergrad Evaluating ∫₀^∞ x²/(x⁴+(a²+1/b²)x²+2a²/b²) dx

  • jazhemar
  • · Replies 2 ·
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2

Undergrad How does the difference quotient drop Δx when taking the limit?

  • JR Sauerland
  • · Replies 6 ·
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6

Undergrad How to interpret the differential of a function

  • Frank Castle
  • · Replies 22 ·
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22

Undergrad Differentiability of convolution

  • Zafa Pi
  • · Replies 4 ·
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4

Undergrad Gradient Derivation: Simplifying Directional Derivatives

  • kidsasd987
  • · Replies 1 ·
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1

High School Understanding Scalar and Vector Products in Geometric Algebra

  • smims
  • · Replies 8 ·
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8

High School Why does d/dx(sin(2πfx)) have the factor 2πf?

  • lioric
  • · Replies 5 ·
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5

Which Z Value Should Be Used for Camera Motion?

  • wonder1
  • · Replies 6 ·
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6
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7

High School Approximating Pi using Newton-Raphson

  • whit3r0se-
  • · Replies 5 ·
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5

Find the stable equilibrium points

  • evinda
  • · Replies 8 ·
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8
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11

Undergrad Regarding Error Bound of Taylor Series

  • Aldnoahz
  • · Replies 8 ·
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8
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6

Undergrad Vector Laplacian: Scalar or Vector?

  • olgerm
  • · Replies 8 ·
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8

Undergrad Why does the sum of natural numbers equal -1/12 in string theory?

  • whit3r0se-
  • · Replies 2 ·
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2

Graduate Solving polynomial coefficients to minimize square error

  • tomizzo
  • · Replies 8 ·
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8

Volume of Region Between y=x and y=-x²+2x

  • suluclac
  • · Replies 4 ·
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4

How Do Constraints Affect Finding Stationary Points and Global Extrema?

  • Pulty
  • · Replies 17 ·
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17

Undergrad Vector Triple Product Identity and Jacobi Identity for Deriving 4B.10 and 4B.11

  • TheCanadian
  • · Replies 2 ·
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2

-z.61.W8.6 int sin^2(x)cos^2(x) dx

  • karush
  • · Replies 6 ·
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6

Undergrad "Hence the partial derivatives ru and rv at P are tangential

  • OmegaKV
  • · Replies 2 ·
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2

Finding the slope of a line through (2,2) and (6,7)

  • suluclac
  • · Replies 1 ·
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1

Finding stationary points of f(x,y) = (1/2)x²eʸ - (1/3)x³ - yeᶟʸ

  • Pulty
  • · Replies 4 ·
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4

Jake's questions about integrations

  • Prove It
  • · Replies 1 ·
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1

How much work is required to lift a weight to orbit?

  • karush
  • · Replies 2 ·
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2

Is My Root Test Solution Correct?

  • Zoey93
  • · Replies 2 ·
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2

Where Does the $\frac{1}{2}$ in Step 3 Come From?

  • karush
  • · Replies 9 ·
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9

Evaluating Integral with Change of Variables

  • karush
  • · Replies 5 ·
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5

What is the derivative of the trigonometric integral?

  • karush
  • · Replies 9 ·
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9

Undergrad Why Does the Gradient Point Towards the Greatest Increase?

  • kidsasd987
  • · Replies 3 ·
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3

Proving Divergence of \sum\frac{1}{2n+1}

  • suluclac
  • · Replies 2 ·
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2

Expanding summation notation and finding sums

  • karush
  • · Replies 2 ·
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2

Undergrad Why use continuity at b to prove uniform continuity on a union of intervals

  • Alpharup
  • · Replies 33 ·
2
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33

Integral involving the derivative

  • Yankel
  • · Replies 5 ·
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5

What Is the Correct Volume of the Region Revolving Around x=1?

  • karush
  • · Replies 3 ·
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3

Two Similar Limits with Different Results

  • Velo
  • · Replies 4 ·
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4

Calculating Limits without Cheating or L'Hopital's Rule

  • Yankel
  • · Replies 5 ·
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5

Undergrad What are the possible y-values for a given x in the overlap of two functions?

  • AtlasSniperma
  • · Replies 16 ·
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16

Undergrad Is every conservative vector field incompressible?

  • Shawn Huetter
  • · Replies 9 ·
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9

Undergrad What Test to Show that Inverse Curl Exists?

  • greswd
  • · Replies 6 ·
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6

How Do You Calculate Volume by Rotating a Region Bounded by Curves?

  • karush
  • · Replies 9 ·
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9

Am I changing the coordinates well?

  • Granger
  • · Replies 8 ·
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8

Undergrad Why does [f(b)-f(a)]/(b-a) make sense?

  • egio
  • · Replies 4 ·
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4

High School Can a function intersect its derivative and integral at the same point?

  • Saracen Rue
  • · Replies 4 ·
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4

Undergrad Difference between slope with respect to origin and slope at a point

  • Mayank Totloor
  • · Replies 6 ·
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6

Image of a triangle under the transformation x=2u+v, y=u²-v

  • Granger
  • · Replies 2 ·
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2

Integrand with Lambert W -function

  • Theia
  • · Replies 3 ·
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3
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3

Is the Limit of x/x! as x Approaches 0 Equal to 0 or Does it Not Exist?

  • Prove It
  • · Replies 7 ·
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7

Undergrad Chain rule in a multi-variable function

  • Ananthan9470
  • · Replies 1 ·
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1

Undergrad Integral of third order polynomial exponential

  • PHAM Duong Hung
  • · Replies 1 ·
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1

From the marginal cost to the total cost.

  • Francobati
  • · Replies 1 ·
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1

Undergrad Proving limit theorems when limit tends to infinity

  • Alpharup
  • · Replies 7 ·
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7

Polar coordinates to evaluate double integral

  • brunette15
  • · Replies 1 ·
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1

Undergrad Lebesgue measure and Fourier theory

  • Jianphys17
  • · Replies 1 ·
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1

Undergrad Lagrange Multiplier where constraint is a rectangle

  • SamitC
  • · Replies 4 ·
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4

Undergrad Is my integral integrable using Mathematica or is there a fundamental error?

  • EngWiPy
  • · Replies 43 ·
2
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43

Solving the Integral: $\int_{0}^{1}\dfrac{x^4(1-x)^4}{1+x^2}dx$

  • Albert1
  • · Replies 3 ·
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3

Differentiation with fractions, radicands, and the power chain rule

  • SHLOMOLOGIC
  • · Replies 7 ·
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7

Undergrad Is there a trick to tell which is the higher curve?

  • Alexandra Fabiello
  • · Replies 5 ·
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5

Undergrad Calculating Flux through shape on irregular plane in 3-Space

  • Dangshnizzle
  • · Replies 1 ·
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1

What is the calculation for the height of a high jump on the moon?

  • Nemo1
  • · Replies 6 ·
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6

Undergrad Ln x as a logarithmic function

  • ruivocanadense
  • · Replies 17 ·
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17

Undergrad Uniform current in cylinder and straight wire: same field?

  • DavideGenoa
  • · Replies 6 ·
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6

Undergrad General solution to linear homogeneous 2nd order ODEs

  • Frank Castle
  • · Replies 8 ·
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8
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1

A Function's Intervals of Increasing/Decreasing, Extrema and Concavity

  • omwattie
  • · Replies 25 ·
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25

Undergrad Finding the volume under the curve of a rotated function

  • Terrell
  • · Replies 8 ·
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8

Maximisation Question: Find Largest Capacity

  • Nemo1
  • · Replies 6 ·
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6

Undergrad What are the interpretations of Convolution integral?

  • henry wang
  • · Replies 9 ·
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9

Graduate Mathematics of The Multi Dimensional Universe

  • CaptainHawaii
  • · Replies 7 ·
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7

Undergrad Question regarding the derivative terminalogy and wording

  • Mr Davis 97
  • · Replies 1 ·
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1

Surface area of sphere increase at a constant rate

  • Nemo1
  • · Replies 11 ·
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11

Undergrad How Do You Solve for At Using Subscript Derivative Notation?

  • Abdul.119
  • · Replies 1 ·
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1

Undergrad Square Root in an alternating power series

  • Satirical T-rex
  • · Replies 6 ·
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6

S4.6r.11 Solid of revolution about the y axis

  • karush
  • · Replies 10 ·
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10