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.
Please check my calculations with these complex numbers
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Frequencies for harmonic oscillator with multiple periodic solutions?
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6
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305
Fourier series of this scale and shift of triangle wave
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1
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287
Question about Absorption Laws in Boolean Algebra
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5
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322
Simplifying Boolean expressions
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10
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305
Simpliying this partial differential equation
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4
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300
Verify Green's Theorem in the given problem
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10
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525
Integer triangle with integer heights
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16
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335
Expectation of a sum of random variables
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11
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512
A few questions to make sure I understand Fourier series
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3
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360
How to express this Fourier coefficient without trig function?
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6
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296
Solve the problem involving space curve
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2
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333
Please help me understand a definition of a covariance function
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2
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305
Why only odd cosine terms in this Fourier series?
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1
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319
Fourier Transform - Solutions Error?
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5
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447
Test whether the diets are different from one another at ##α=5\%##
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5
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373
Help understanding the definition of positive semidefinite matrix
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303
Help with the Separation of Variables and Integration
3
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1K
Conditions for the undetermined coefficients method to fail with sinusoidal input
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12
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444
Why is this not a general solution to this nonlinear DE?
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5
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342
Linearly independent functions with identically zero Wronskian
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1
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350
Understanding Wronskian of solutions to homoeneous 2nd order linear DE
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2
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324
Solving a separable matrix ODE.
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3
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394
Solving a first order matrix differential equation
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6
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351
Show that the given function is continuous
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27
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784
Show uniqueness in Dirichlet problem in unit disk
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6
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442
Evaluate the limit of this harmonic series as n tends to infinity
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17
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677
Prove that solutions to autonomous first order DE can't have local maxima
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2
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367
Find the supremum of ##Y## if it exists. Justify your answer.
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20
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486
How to write sin(n*pi/2) as an expression (-1)^f(n)?
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8
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381
Integral of sinc function using Fourier series
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6
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499
Find the divergence and curl of the given vector field
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10
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503
Help me understand why this summation index is not j
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11
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459
Does there exist a 2x2 non-singular matrix with only one 1d eigenspace?
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2
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434
Partial Differentiation of this Equation in x and y
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4
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344
Lagrange multipliers understanding
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8
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521
A question regarding continuous function on a closed interval
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9
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585
Direct Proof that every zero of p(T) is an eigenvalue of T
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24
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877
Solving modified heat equation
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5
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301
Calculate the area intersected by a sphere and a rectangular prism
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4
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333
Solve integral by finding Fourier series of complex function
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3
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410
Compute sum (possibly using Parseval's formula)
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1
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385
A direct proof involving a positive summability kernel
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7
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480
Deduce orthogonality relations for sine and cosine w/ Euler's Formula
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1
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306
Show that a set has no "unique nearest point" property
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14
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549
Why is the Fourier coefficent calculated like this?
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4
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388
Intuition for gradient vector of multivariable functions
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2
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339
Integrate [cosec(30°+x)-cosec(60°+x)] dx in terms of tan x
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3
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376
How Do You Solve a Differential Equation Using an Ansatz?
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5
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586
Verify property of inner product
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21
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511
Integration of functions of form ##\dfrac{1}{ax+b}##
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10
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433
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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389
Minimize integral using orthogonal basis
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2
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415
How Does Integration by Factors Relate to the Product Rule and FTC?
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30
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510
Prove 9 is eigenvalue of ##T^2\iff## 3 or -3 eigenvalue of ##T##.
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5
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581
Do these two statements imply an underlying induction proof?
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7
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451
Dirac delta function approximation
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13
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522
Why can one do this "trick" in the First Order Linear D.E. method?
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19
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814
Operator T, ##T^2=I##, -1 not an eigenvalue of T, prove ##T=I##.
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2
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367
Show logical notation for being prime
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1
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1K
Finding a periodic solution to ODE
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16
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611
Plotting the approximation of the Dirac delta function
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3
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425
Electromagnetism: Force on a parabolic wire in uniform magnetic field
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20
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512
On pointwise convergence of Fourier series
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3
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461
Parametric curve question (determining unknown point)
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2
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436
Calculate the limit cos(x)/sin(x) when x approaches 0
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12
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875
Finding the power loss in a wire of varying cross-sectional area
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8
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1K
Solve an ODE using Fourier series
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2
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406
How to Approach Solving a Nonlinear Second Order ODE with a Quadratic Term?
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4
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557
How should I show that ## B ## is given by the solution of this?
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2
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492
Fourier series of translated function
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1
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572
How should I calculate the stationary value of ## S[y] ##?
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2
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Variation of parameter VS Undetermined Coefficients
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7
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538
Evaluate limit of this integral using positive summability kernels
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2
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452
Can you help me understand this modification to a formula?
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14
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640
Help me prove integral answer over infinitesimal interval
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9
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596
How should I use the Jacobi equation to show this?
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4
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728
Help me solve differential equation please involving a fraction and a square root
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7
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554
Why Does Taylor's Theorem Use +O(ε) Instead of -O(ε)?
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3
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496
How should I use the Jacobi equation to determine the nature of this?
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5
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664
Solving Klein Gordon’s equation
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480
How to determine the integration constants in solving the Klein Gordon equation?
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7
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613
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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515
Electromagnetism question: Current flowing between concentric spheres
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3
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422
Orthogonality of 2 complex exponentials
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11
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Prove orthogonality of these curves
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7
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525
How does Rotating an Ellipse change its equation?
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13
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Find the area of a segment of a circle using integration
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8
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642
Show that the limit (1+z/n)^n=e^z holds
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6
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512
Need a real life example where a partial derivative is used in motion
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3
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671
Partial Derivative Simplification
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3
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802
Obtain a nonzero solution of ##y''-4y'+x^2(y'-4y)=0## by inspection
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7
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715
Avoid unpleasant integrals in solving IVP
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3
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602
Prove ##a\cdot b = b \cdot a ##using Peano postulates
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3
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716
Checking series for convergence
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5
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540
Prove ##(a\cdot b)\cdot c =a\cdot (b \cdot c)## using Peano postulates
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1
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481
Find the volume of the solid bound by the three coordinate planes
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2
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484
Applying Stoke's Theorem: A Hint
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26
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Calculus Homework Help

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