Calculus and Beyond Homework Help Forum

Free calculus and beyond homework help via qualified mentors. Math courses from calculus on-wards homework. Please use the template when requesting help and show your work.

Threads

2 questions on continuity/continuous extensions

  • akoska
  • · Replies 4 ·
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4

Finding a Basis for 3x3 Symmetric Matrices

  • robierob12
  • · Replies 13 ·
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13

Integral test, basic comparsion test, limit comparsion test

  • kingwinner
  • · Replies 11 ·
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11

Difference between kernel f and isotrope vectors

  • kthouz
  • · Replies 1 ·
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1

Green's theorem line integral, surface integral, and curl function

  • reverie414
  • · Replies 3 ·
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3

Rewriting a Riemann Sum Statement: Identify the Function

  • cybercrypt13
  • · Replies 1 ·
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1

How do you classify a PDE if it contains d(u)/dt?

  • pivoxa15
  • · Replies 3 ·
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3

Approximating Area Under Linear Transformations

  • NutriGrainKiller
  • · Replies 11 ·
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11

Functions of several cariables - minimum cost

  • glitchy
  • · Replies 1 ·
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1

Using convolution for Laplace transform

  • sensitive
  • · Replies 8 ·
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8

Correct Method for Finding Area Between 2 Curves Using Integration

  • masterflex
  • · Replies 2 ·
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2

Does an Improper Orthogonal Matrix Always Have a Determinant of -1?

  • Mindscrape
  • · Replies 8 ·
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8

Proof again: Show that a mod m = b mod m if a = b (mod m)

  • VinnyCee
  • · Replies 7 ·
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7
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6

Differentiating e^-x times sqrt(1-x)

  • cabellos
  • · Replies 2 ·
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2

Proving the Uniqueness of a System of Equations

  • VietDao29
  • · Replies 3 ·
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3

If a divides bc, must a divide b or a divide c?

  • VinnyCee
  • · Replies 13 ·
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13

Taylor Series for exp(x^3) around x = 2

  • teleport
  • · Replies 20 ·
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20

Show a curve is geodesic and asymptotic iff it's a straight line segment

  • Dragonfall
  • · Replies 3 ·
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3

Continuity of Integral with Fixed Variables in Lebesgue Integration

  • Mystic998
  • · Replies 1 ·
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1

How Do You Find a Power Series Representation for f(x) = x / (4+x)?

  • kskiraly
  • · Replies 7 ·
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7

L'Hopital's Rule for Solving Limits

  • moloko
  • · Replies 4 ·
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4

Proving the sum of squared deviations formula

  • mkkrnfoo85
  • · Replies 3 ·
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3

Non-Uniqueness of Solution to ODE with y(0)=0

  • Logik
  • · Replies 2 ·
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2

How do I solve (z-a)^3 = 8 when z1*z2*z3 = -9?

  • transgalactic
  • · Replies 7 ·
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7

Separation of Variables / Boundary Conditions

  • raintrek
  • · Replies 5 ·
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5

Simple integral - but a question of methodology

  • ianb
  • · Replies 9 ·
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9

How Do Standard Deviations Affect Tolerance in Normal Distributions?

  • brad sue
  • · Replies 3 ·
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3

Can you give a more specific question?

  • kskiraly
  • · Replies 1 ·
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1

Difference between delta and d in calculus

  • beezey
  • · Replies 5 ·
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5
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8

Induced homomorphisms between quotient groups and normal subgroups

  • *melinda*
  • · Replies 1 ·
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1

Symmetric/Antisymmetric Relations, Set Theory Problem

  • alec_tronn
  • · Replies 6 ·
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6

Proving uniform continuity via shifted functions convergence

  • mattmns
  • · Replies 4 ·
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4

Really hard infinite series test

  • Doom of Doom
  • · Replies 11 ·
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11

How can I solve a problem involving dynamic systems in physics?

  • adysa
  • · Replies 2 ·
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2

Diff equation by diagonalization

  • EvLer
  • · Replies 6 ·
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6
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4

What is the Linear Approximation Range for Sin(f) Within 10% Error?

  • Giuseppe
  • · Replies 1 ·
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1

Solving infinity limit, something weird.

  • wk1989
  • · Replies 22 ·
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22

Can Power Series Solve the Differential Equation xy' - 3y = k?

  • siddharth
  • · Replies 5 ·
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5

A sinusoid integrated from -infinity to infinity

  • pennyantics
  • · Replies 4 ·
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4

Group Theory + Fermat's Little Number Theorem

  • mufusisrad
  • · Replies 4 ·
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4

What can you tell me about the function f(x)=x+1/x?

  • sophiaqiu
  • · Replies 4 ·
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4

Maximum and minimum value question

  • afcwestwarrior
  • · Replies 6 ·
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6

Differences between sinx and cosx functions

  • Ry122
  • · Replies 4 ·
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4

What Went Wrong with My Integration by Parts?

  • paperclip
  • · Replies 6 ·
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6
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1

Why does the finger multiplication trick work in base n?

  • mariouma
  • · Replies 1 ·
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1

Integrating time as a function of scale factor in cosmology

  • b_o3
  • · Replies 2 ·
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2

Solving Equation 5n*[(2i)^(n-1)]=11520: Find n=? (Answer: n=9)

  • transgalactic
  • · Replies 4 ·
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4
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5

Factorising Polynomials in Z[x]

  • pivoxa15
  • · Replies 9 ·
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9

Is Z[sqrt2] defined as {a+b(sqrt2)|a,b in Z}?

  • pivoxa15
  • · Replies 4 ·
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4

Eigenvalues/eigenvectors and linear transformation

  • quasar_4
  • · Replies 2 ·
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2

For what values of x does this series converge

  • Gauss177
  • · Replies 2 ·
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2

Find Equal Area Between y=x^2 and y=9

  • mikesown
  • · Replies 5 ·
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5

L^p Norm of a Function on $\mathbb{T}$

  • Dragonfall
  • · Replies 1 ·
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1

How Many Laborers Should You Hire to Move Excess Topsoil from Your Farm?

  • ploppers
  • · Replies 3 ·
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3

What is the difference between these two problems?

  • oahsen
  • · Replies 12 ·
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12

Valid Method for Proving Matrix Equation with Independent Variables

  • island-boy
  • · Replies 4 ·
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4

Verifying Vector Equations: Proving Properties of Cross Products

  • chocbizkt
  • · Replies 1 ·
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1

Symmetric matrix and diagonalization

  • EvLer
  • · Replies 9 ·
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9

Proving that the Laplace Transform of J0(t) is 1/(s + 1)^1/2

  • sensitive
  • · Replies 8 ·
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8

Rolle's theorem with f(x) = sin(2πx) on [-1,1]

  • afcwestwarrior
  • · Replies 6 ·
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6

Is the Kernel of Z[x] to R a Principal Ideal?

  • pivoxa15
  • · Replies 5 ·
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5

Iterated Integral Surface Area Problem (with Polor Coordinates)

  • alec_tronn
  • · Replies 2 ·
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2

How Do You Solve This Complex Indefinite Integral?

  • Illusionist
  • · Replies 7 ·
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7

Closest linear combination of 1 and x³ to x² on [-1,1]

  • EvLer
  • · Replies 2 ·
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2

Solving the GCD of 2^10 and 10!: A Number Trick?

  • lordy12
  • · Replies 4 ·
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4

Convolution integral limits for piecewise input signals

  • dfx
  • · Replies 1 ·
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1

Finding Orthonormal Set q1, q2, q3 for Column Space of A

  • EvLer
  • · Replies 6 ·
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6

PID dosen't have to contain 1?

  • pivoxa15
  • · Replies 5 ·
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5

Help with two integrals using substitution

  • transgalactic
  • · Replies 6 ·
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6

Local extension and differential geometry

  • Hyperreality
  • · Replies 1 ·
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1

Integrating e^(x sin x + cos x) with a complex polynomial factor

  • rishiraj20006
  • · Replies 2 ·
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2

Can a subring exist in the same domain as its parent ring?

  • pivoxa15
  • · Replies 5 ·
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5

When does x^2 ≡ a (mod n) have solutions if g is a primitive root?

  • mattmns
  • · Replies 2 ·
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2
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2

Finding the derivative of tan(4x)

  • Ry122
  • · Replies 15 ·
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15

PID Math Problem: Every Element Generating Ideal?

  • pivoxa15
  • · Replies 3 ·
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3
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3

Differentiating Parametric Functions

  • danago
  • · Replies 3 ·
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3

Finding the Equation of a Tangent: y=2sinx at P(5pie/6,1)

  • Ry122
  • · Replies 2 ·
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2

How to derive the derivative formula of arctan x?

  • dnt
  • · Replies 6 ·
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6

Finding critical numbers of g(T) = 5^(2/3) + t^(5/3)

  • afcwestwarrior
  • · Replies 4 ·
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4

Matrix Transformation ugly problem

  • kingwinner
  • · Replies 2 ·
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2

Graphing a Function with No Local Minimum at x=2 and Differentiable at x=2

  • afcwestwarrior
  • · Replies 4 ·
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4

System of Coulped ODE's/ Panic Attack

  • H-bar None
  • · Replies 4 ·
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4

Second order homogeneous Differential EQ with complex coefficients.

  • WHOAguitarninja
  • · Replies 2 ·
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2

Solve for a,b,c in y = ax(cubed) + bx(squared) + c

  • mathmann
  • · Replies 20 ·
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20

X in ideal if x^n is in ideal?

  • pivoxa15
  • · Replies 9 ·
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9

If AB-I is invertible, prove BA-I is invertible for nxn matrices

  • daniel_i_l
  • · Replies 3 ·
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3

What is the critical number of the function f(x)= x^3 + 3x^2-24x?

  • afcwestwarrior
  • · Replies 15 ·
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15

What are the ages of the three sons?

  • johnnyc
  • · Replies 3 ·
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3

Does a function value equal the limit as x approaches that point?

  • pivoxa15
  • · Replies 12 ·
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12

Problem with finite diffence method

  • zeynepkisa
  • · Replies 5 ·
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5
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1

Simple cosine expression NOT so simple

  • Mark Wood
  • · Replies 7 ·
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7

Convergence of 9^(n+1)/10^n and series with ln and arctan

  • Gauss177
  • · Replies 4 ·
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4