Calculus and Beyond Homework Help Forum

Post thread
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.
Can substitution be used to solve these trigonometric integrals?
  • · Replies 3 ·
Replies
3
Views
3K
Integrating Ln x: Does the Answer Always Equal 1/x?
  • · Replies 5 ·
Replies
5
Views
47K
Smooth function between smooth manifolds
  • · Replies 2 ·
Replies
2
Views
5K
Multiplication in R=\mathbb{Z}_5 \times \mathbb{Z}_5: Operations and Definitions
  • · Replies 3 ·
Replies
3
Views
3K
How can I find the radius of this circle?
  • · Replies 2 ·
Replies
2
Views
5K
What exactly the completion of a space is
  • · Replies 25 ·
Replies
25
Views
4K
Proving (A U B) x (A U B) = (A x A) U (B x B) with Discrete Math
  • · Replies 3 ·
Replies
3
Views
4K
Proving One-Sided Limits - Jack
  • · Replies 7 ·
Replies
7
Views
4K
What went wrong with my calculations for a 2nd order D.E. solution?
  • · Replies 2 ·
Replies
2
Views
2K
Optimizing Rural Gothic Window Frame: Problem Solving
  • · Replies 3 ·
Replies
3
Views
4K
Paradox in Solving y``+8y`+16y=64cosh4x
  • · Replies 3 ·
Replies
3
Views
3K
Linear Differential Equations with Exponential and Trigonometric Functions
  • · Replies 2 ·
Replies
2
Views
3K
How Do You Find the Maximum of C(T) = 2t/(t+3)^2?
  • · Replies 2 ·
Replies
2
Views
3K
A question about the minimum/maximum of a convex function
  • · Replies 5 ·
Replies
5
Views
9K
What are the derivatives of sine and cosine inverse functions?
  • · Replies 7 ·
Replies
7
Views
4K
Volume of a sphere with a hole through it
  • · Replies 4 ·
Replies
4
Views
5K
Is {R-Z} a Subring of the Reals?
  • · Replies 3 ·
Replies
3
Views
2K
Is the Set of Cosine and Polynomial Functions Dense in C(S, ℝ)?
  • · Replies 1 ·
Replies
1
Views
2K
Understand Fourier Transforms: A Comprehensive Guide
  • · Replies 2 ·
Replies
2
Views
3K
Describe the set of all compact sets which are supports of continuous functions
  • · Replies 6 ·
Replies
6
Views
6K
Proving the moment of inerta of a sphere: can someone help me please?
  • · Replies 2 ·
Replies
2
Views
3K
What is the Stone-Weierstrass Theorem?
  • · Replies 4 ·
Replies
4
Views
3K
Calculate Double Series: \sum_{i=1}^{\infty} \sum_{j=i}^{\infty} p^(j+i)
  • · Replies 3 ·
Replies
3
Views
2K
Is Phi Upper Semicontinuous in Rudin's Analysis Problem?
  • · Replies 3 ·
Replies
3
Views
4K
Prove Cantor set is measure zero with style
  • · Replies 6 ·
Replies
6
Views
10K
Proving Equal Roots in ar^2+br+c=0 with L[e^(rt)]
  • · Replies 2 ·
Replies
2
Views
5K
Using Sigma Notation to Prove \sum_{k=M}^{N} 2^{-k} = 2(2^{-M} - 2^{-N})
  • · Replies 16 ·
Replies
16
Views
6K
Prove: Absolute Continuity Let f in AC[0,1] Monotonic
  • · Replies 4 ·
Replies
4
Views
2K
What is the mistake in my derivative calculation and how can I fix it?
  • · Replies 3 ·
Replies
3
Views
2K
Absolute Max/Min of Cube Root (8-t) in [0,8]
  • · Replies 2 ·
Replies
2
Views
7K
Find Critical Numbers for F(x)= x^3-12x^2 - Ash
  • · Replies 2 ·
Replies
2
Views
3K
Solving for Infection Growth with a Diff. Equation
  • · Replies 6 ·
Replies
6
Views
3K
Is Every Field and Ring Homomorphism Injective?
  • · Replies 4 ·
Replies
4
Views
5K
Solving x^4 + 3x + c = 0 with Mean Value & Rolle's Theorems
  • · Replies 2 ·
Replies
2
Views
2K
Solve 3 Integrals with Fourier Integral - Cyrus
  • · Replies 5 ·
Replies
5
Views
10K
Matrix, making R2 to R3, finding standard matrix A where did i mess up?
  • · Replies 1 ·
Replies
1
Views
10K
Can Mathematical Induction Validate These Inequalities for All Natural Numbers?
  • · Replies 3 ·
Replies
3
Views
3K
Determine whether the series converges
  • · Replies 18 ·
Replies
18
Views
5K
Combining Fourier Series for Step Function: $\phi_{n} = \sin(nx)$
  • · Replies 1 ·
Replies
1
Views
2K
Finding Fourier Series f(x)=1 & Integrating for g(x)=x on 0<=x<=pi
  • · Replies 1 ·
Replies
1
Views
2K
Can anyone prove the following theorem?
  • · Replies 2 ·
Replies
2
Views
2K
Complex Analysis: Find Laurent Series for f(z) = 1/(e^-z - 1) About 0
  • · Replies 2 ·
Replies
2
Views
2K
Calculating Annual Effective Interest Rate for Financial Mathematics
  • · Replies 2 ·
Replies
2
Views
3K
Proving the Sum of Cosines Using Euler's Formula
  • · Replies 7 ·
Replies
7
Views
3K
Partial Differential Equations
  • · Replies 6 ·
Replies
6
Views
5K
Diverging Series: Proving Logarithmic Divergence with Real x
  • · Replies 5 ·
Replies
5
Views
2K
Finding the Tangent Space of SL(n,real) with A(0) being the Identity Matrix
  • · Replies 1 ·
Replies
1
Views
2K
Uniform semicircular lamina question
  • · Replies 1 ·
Replies
1
Views
3K
Understanding Operator Identity: A^+(Af(x))^*g(x) = f^*(x)A^+g(x)
  • · Replies 3 ·
Replies
3
Views
2K
Confirmation on Linear Algebra Question
  • · Replies 2 ·
Replies
2
Views
2K
Solving Linear Systems Using LDL^T Factorization: Step-by-Step Guide
  • · Replies 1 ·
Replies
1
Views
2K
Undetermined Coefficients / Variation of Parameters
  • · Replies 2 ·
Replies
2
Views
8K
What is a Removable Discontinuity and How Does it Affect x=2 in g(x) = x?
  • · Replies 6 ·
Replies
6
Views
23K
How to find an equation for a graph?
  • · Replies 17 ·
Replies
17
Views
9K
Understanding the Cosine Law: A Geometric Approach
  • · Replies 3 ·
Replies
3
Views
3K
Finding the matrix transformation of T
  • · Replies 4 ·
Replies
4
Views
4K
Did i do this matrix transformation right?
  • · Replies 2 ·
Replies
2
Views
3K
How can I solve \frac{dy}{dx}-\frac{y}{x}=\frac{y^2}{x^2} for x>0?
  • · Replies 4 ·
Replies
4
Views
3K
Simple differentiation for YOU PPL
  • · Replies 2 ·
Replies
2
Views
2K
Proving Laplacian in Cylindrical Coordinates
  • · Replies 4 ·
Replies
4
Views
3K
Why Might the Square of a Sum Not Equal the Sum of Squares for Matrices?
  • · Replies 4 ·
Replies
4
Views
2K
Finding Critical Numbers for a Trigonometric Function
  • · Replies 7 ·
Replies
7
Views
3K
How can you prove the N choose k formula without using a formula?
  • · Replies 2 ·
Replies
2
Views
5K
Critical Numbers for f(x)=2sin(2x)/x on [-pi,pi]
  • · Replies 3 ·
Replies
3
Views
3K
Compute Arctangent Series: Sum from 0 to n
  • · Replies 1 ·
Replies
1
Views
3K
Irreducible polynomial on polynomial ring
  • · Replies 1 ·
Replies
1
Views
5K
Sum of interior angles of cyclic hexagon
  • · Replies 1 ·
Replies
1
Views
3K
Finding the Inverse of a Polynomial in Zp[x]: Prime Algorithm
  • · Replies 13 ·
Replies
13
Views
29K
Understanding Change of Variables for KE Formula
  • · Replies 1 ·
Replies
1
Views
2K
Finding Centre of Mass for a Uniform Semicircular Lamina
  • · Replies 5 ·
Replies
5
Views
7K
Expectation value of continuous random variable
  • · Replies 6 ·
Replies
6
Views
4K
Maximization- differential equations confused
  • · Replies 5 ·
Replies
5
Views
4K
Uniform continuity and bounded
  • · Replies 4 ·
Replies
4
Views
4K
How to Find and Verify Stationary Points in a Differentiation Problem
  • · Replies 3 ·
Replies
3
Views
2K
Convergence of Series: Is x ≤ 2 the Only Condition for Convergence of S?
  • · Replies 6 ·
Replies
6
Views
2K
Evaluating Surface Integral of f=x over Semi Sphere
  • · Replies 21 ·
Replies
21
Views
6K
Inverse Function with Differentiation
  • · Replies 1 ·
Replies
1
Views
4K
Linear transformation - matrices
  • · Replies 4 ·
Replies
4
Views
6K
What are the Different Ways to Define Legendre Polynomials?
  • · Replies 1 ·
Replies
1
Views
3K
Numerical solution of 2nd order ODE
  • · Replies 3 ·
Replies
3
Views
6K
Is a Nullspace Spanned by One Vector Possible?
  • · Replies 1 ·
Replies
1
Views
2K
Max Capacity Trapezoid Trough: Optimization Problem Q
  • · Replies 1 ·
Replies
1
Views
5K
Discovering Triangle Symmetry: Tips for Solving Angle and Side Length Problems
  • · Replies 3 ·
Replies
3
Views
2K
Is My Trial Function Correct for Solving this ODE? (Exam Tomorrow)
  • · Replies 1 ·
Replies
1
Views
4K
Residue Calculus for Evaluating e^z/cosh z on Circle |z|=5
  • · Replies 1 ·
Replies
1
Views
2K
Maxima and Minima for a two variable function
  • · Replies 1 ·
Replies
1
Views
5K
So in this case, the derivative of f(x) = cos pi*x is f'(x) = -pi*sin pi*x.
  • · Replies 2 ·
Replies
2
Views
3K
Convergence/divergence of series
  • · Replies 3 ·
Replies
3
Views
3K
Optimizing PRS in an Optimization Problem (See Attachment)
  • · Replies 3 ·
Replies
3
Views
3K
Solving Nonlinear Differential Equations for Air Drag in One Dimension
  • · Replies 4 ·
Replies
4
Views
2K
Proof Error: Missing Link at n^4 Term
  • · Replies 3 ·
Replies
3
Views
2K
Little confussed (Mean Value Theorem)
  • · Replies 5 ·
Replies
5
Views
2K
Need help on 2 optimization problems
  • · Replies 3 ·
Replies
3
Views
3K
Optimization- oh how the brain hurts
  • · Replies 2 ·
Replies
2
Views
2K
Is the Derivative of e^(x-1) Simply e^(x-1)?
  • · Replies 13 ·
Replies
13
Views
21K
Find Area Below Graph with Calculus: A Lab Tutorial
  • · Replies 1 ·
Replies
1
Views
2K
Proving Finite Scalar Series for V and T in L(V)
  • · Replies 1 ·
Replies
1
Views
2K
Proving Angle DBA + Angle DBC = 180: A Challenge!
  • · Replies 1 ·
Replies
1
Views
2K
Are All Real-Valued Functions with Zeros Zero Divisors?
  • · Replies 11 ·
Replies
11
Views
5K
Difference equations - just a little clarification wanted
  • · Replies 2 ·
Replies
2
Views
3K