Calculus and Beyond Homework Help Forum

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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.
Help understanding the definition of positive semidefinite matrix
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287
Help with the Separation of Variables and Integration
3
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Conditions for the undetermined coefficients method to fail with sinusoidal input
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428
Why is this not a general solution to this nonlinear DE?
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330
Linearly independent functions with identically zero Wronskian
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335
Understanding Wronskian of solutions to homoeneous 2nd order linear DE
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313
Solving a separable matrix ODE.
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373
Solving a first order matrix differential equation
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6
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340
Show that the given function is continuous
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27
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773
Show uniqueness in Dirichlet problem in unit disk
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424
Evaluate the limit of this harmonic series as n tends to infinity
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652
Prove that solutions to autonomous first order DE can't have local maxima
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354
Find the supremum of ##Y## if it exists. Justify your answer.
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20
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471
How to write sin(n*pi/2) as an expression (-1)^f(n)?
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8
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361
Integral of sinc function using Fourier series
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476
Find the divergence and curl of the given vector field
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10
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479
Help me understand why this summation index is not j
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11
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446
Does there exist a 2x2 non-singular matrix with only one 1d eigenspace?
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420
Partial Differentiation of this Equation in x and y
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331
Lagrange multipliers understanding
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499
A question regarding continuous function on a closed interval
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578
Direct Proof that every zero of p(T) is an eigenvalue of T
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24
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838
Solving modified heat equation
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284
Calculate the area intersected by a sphere and a rectangular prism
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4
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320
Solve integral by finding Fourier series of complex function
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3
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399
Compute sum (possibly using Parseval's formula)
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373
A direct proof involving a positive summability kernel
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7
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474
Deduce orthogonality relations for sine and cosine w/ Euler's Formula
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300
Show that a set has no "unique nearest point" property
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14
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538
Why is the Fourier coefficent calculated like this?
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378
Intuition for gradient vector of multivariable functions
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331
Integrate [cosec(30°+x)-cosec(60°+x)] dx in terms of tan x
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3
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361
How Do You Solve a Differential Equation Using an Ansatz?
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564
Verify property of inner product
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506
Integration of functions of form ##\dfrac{1}{ax+b}##
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10
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422
Probability density function of Z=X+Y and Z=XY
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1K
Limit of probabilities of a large sample
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1
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377
Minimize integral using orthogonal basis
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395
How Does Integration by Factors Relate to the Product Rule and FTC?
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30
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502
Prove 9 is eigenvalue of ##T^2\iff## 3 or -3 eigenvalue of ##T##.
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563
Do these two statements imply an underlying induction proof?
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7
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435
Dirac delta function approximation
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508
Why can one do this "trick" in the First Order Linear D.E. method?
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19
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800
Operator T, ##T^2=I##, -1 not an eigenvalue of T, prove ##T=I##.
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360
Show logical notation for being prime
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1K
Finding a periodic solution to ODE
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16
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590
Plotting the approximation of the Dirac delta function
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3
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408
Electromagnetism: Force on a parabolic wire in uniform magnetic field
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20
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493
On pointwise convergence of Fourier series
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3
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440
Parametric curve question (determining unknown point)
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2
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423
Calculate the limit cos(x)/sin(x) when x approaches 0
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12
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824
Finding the power loss in a wire of varying cross-sectional area
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1K
Solve an ODE using Fourier series
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392
How to Approach Solving a Nonlinear Second Order ODE with a Quadratic Term?
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4
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541
How should I show that ## B ## is given by the solution of this?
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482
Fourier series of translated function
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556
How should I calculate the stationary value of ## S[y] ##?
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571
Variation of parameter VS Undetermined Coefficients
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7
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521
Evaluate limit of this integral using positive summability kernels
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2
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440
Can you help me understand this modification to a formula?
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14
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626
Help me prove integral answer over infinitesimal interval
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9
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571
How should I use the Jacobi equation to show this?
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4
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718
Help me solve differential equation please involving a fraction and a square root
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7
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541
Why Does Taylor's Theorem Use +O(ε) Instead of -O(ε)?
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3
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481
How should I use the Jacobi equation to determine the nature of this?
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5
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648
Solving Klein Gordon’s equation
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466
How to determine the integration constants in solving the Klein Gordon equation?
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7
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607
Probability of hitting Homeruns at the Country Club
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Solving system of differential equations using elimination method
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10
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504
Electromagnetism question: Current flowing between concentric spheres
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3
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405
Orthogonality of 2 complex exponentials
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Prove orthogonality of these curves
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518
How does Rotating an Ellipse change its equation?
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3K
Find the area of a segment of a circle using integration
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8
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627
Show that the limit (1+z/n)^n=e^z holds
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6
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503
Need a real life example where a partial derivative is used in motion
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637
Partial Derivative Simplification
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792
Obtain a nonzero solution of ##y''-4y'+x^2(y'-4y)=0## by inspection
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708
Avoid unpleasant integrals in solving IVP
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3
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586
Prove ##a\cdot b = b \cdot a ##using Peano postulates
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709
Checking series for convergence
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522
Prove ##(a\cdot b)\cdot c =a\cdot (b \cdot c)## using Peano postulates
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474
Find the volume of the solid bound by the three coordinate planes
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472
Applying Stoke's Theorem: A Hint
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Solve the problem involving the given double integral
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508
Linear homogenous system with repeated eigenvalues
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553
Find the local maxima and minima for##f(x,y) = x^3-xy-x+xy^3-y^4##
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572
Find the constrained maxima and minima of ##f(x,y,z)=x+y^2+2z##
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2
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530
Line Integral Solution for Curve γ: Simplifying Substitutions
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521
Inner product between velocity and acceleration is zero (parametric)
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6
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557
Find the dimensions that will minimize the surface area of a Rectangle
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475
Line Integral of circle in counterclockwise direction
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717
Limit and Integration of ##f_n (x)##
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693
Proof related to derivative and Big O notation
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804
Show that ##f(x,y)=u(x+cy)+v(x-cy)## is a solution of the given PDE
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9
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606
Solution verification of ODE using Frobenius' method
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3
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513
Prove ##(a+b)\cdot c=a\cdot c+b\cdot c## using Peano postulates
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3
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539
Solve this integral involving a fraction with a trig function
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11
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649
Proving limits for roots and exponents
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715
Injective Function: Proving Correctness with Singlets ##S## and ##T## in ##X##
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626

Calculus Homework Help

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