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How many one-to-one functions f are possible?
- snipekiller
- · Replies 2 ·
Ring problem: nilpotent elements and units
- rachellcb
- · Replies 2 ·
Show that metrics d_1,d_2 are equivalent
- Ratpigeon
- · Replies 5 ·
Inverse Fourier, can't factor denominator, can't use partial frac.
- fishingspree2
- · Replies 2 ·
Science and engineering math: non-homogeneous differential equation
- chatterbug219
- · Replies 11 ·
Fourier transform, complex exponential and infinity
- fishingspree2
- · Replies 2 ·
Continuous functions on intervals
- kingstrick
- · Replies 14 ·
Continuous Functions: Uniform Continuity
- kingstrick
- · Replies 13 ·
Contour integral of (x−y)dz along semicircle
- Polamaluisraw
- · Replies 8 ·
Equivalent conditions on a metric space
- Adorno
- · Replies 14 ·
Derivative product rule and other rule proofs.
- mtayab1994
- · Replies 9 ·
A functional depending upon x and y'(x)
- mistereko
- · Replies 1 ·
What is the basis for W perp in the Gram Schmidt process?
- triucsd
- · Replies 7 ·
Multivariable limits (NOT TO THE ORIGIN)
- mirajshah
- · Replies 9 ·
What is the Binomial Formula in Matrices without Evaluating Determinants?
- Crution
- · Replies 2 ·
Finding critical points by solving two factored equations simultaneously
- giacomh
- · Replies 1 ·
Variance of the sum of random independent variables
- dipole
- · Replies 2 ·
Finding missing solutions for dy/dt = t cos 2t / y
- roam
- · Replies 19 ·
SI and Gaussian unit conversion in electrodynamics
- jaobyccdee
- · Replies 2 ·
Why does strong induction need different numbers of base cases?
- geforce
- · Replies 1 ·
Integro-differential equation with convolution structure
- chatterbug219
- · Replies 7 ·
Reverse the order of integration?
- turbokaz
- · Replies 1 ·
Linear transformation with standard basis
- foreverdream
- · Replies 6 ·
Finding a function from its MacLaurin series?
- Xevrex
- · Replies 1 ·
Prime divisor of composite n must satisfy p ≤ √n
- FreshUC
- · Replies 7 ·
Homomorphism of a cyclic subgroup is a cyclic subgroup ?
- Leb
- · Replies 5 ·
Proof: Cosets equal or disjoint
- Leb
- · Replies 2 ·
If P is normal in H, and H normal in G, then P is normal in G
- mathgirl313
- · Replies 12 ·
Limits for double integral over trapezoidal shape
- dva
- · Replies 1 ·
Basis functions of a differential equation, given boundary conditions
- rdfloyd
- · Replies 2 ·
Finding eigenvalues and constants for a coupled ODE system
- DrunkApple
- · Replies 4 ·
Proving the triangle inequality property of the distance between sets
- jdinatale
- · Replies 5 ·
Linear Algebra question regarding Matrices of Linear Transformations
- psychosomatic
- · Replies 2 ·
Complex Analysis - Proving an analytic function f(z) is constant
- Daized
- · Replies 3 ·
Proof of exchangeability in matrix multiplications with Identity matrix I
- Crution
- · Replies 17 ·
Series expansion of function of two variables
- JesseC
- · Replies 2 ·
[LOGIC] Prove if y + (-x) = 0 then y = x
- Firepanda
- · Replies 5 ·
Science and engineering math: Difference equation, non-homogeneous
- chatterbug219
- · Replies 6 ·
The Jacobi Iterative method question
- Spectre Moncy
- · Replies 2 ·
Mapping a matrix to the null space
- jaobyccdee
- · Replies 3 ·
Property of correlation coefficient
- Max.Planck
- · Replies 2 ·
Let v(x,t) = u(x+ct) and show that
- jpcjr
- · Replies 4 ·
Question on nonlinear dynamics
- JuanYsimura
- · Replies 1 ·
Does the Divergence of ∑b_n Imply ∑a_n Also Diverges?
- Bigworldjust
- · Replies 1 ·
Determine if integral is convergent or divergent?
- theBEAST
- · Replies 4 ·
Liouville's theorem (extended) proof
- d2j2003
- · Replies 2 ·
Convexity of integral functional with (u')² + 3u⁴ + cosh(u) terms
- kingwinner
- · Replies 4 ·
Finding Surface Area of Sphere with Illuminated Light Question
- zachem62
- · Replies 6 ·
Finding convergence/divergence of improper integral
- IntegrateMe
- · Replies 6 ·
Complex Analysis - Finding the equation of a circle
- NewtonianAlch
- · Replies 4 ·
Why Is My Calculation of Curl (A X B) Incorrect?
- sravan_r
- · Replies 1 ·
Implicit differentiation of x^3+y^3=3xy
- shocklightnin
- · Replies 5 ·
Proving If GCD(a,b) = c Then c^2/ab
- FreshUC
- · Replies 4 ·
Proving g°f is Onto: Showing the Ontoness of Composed Functions
- charmedbeauty
- · Replies 3 ·
Is a single-point set closed on the real line?
- cragar
- · Replies 4 ·
Is H a Subgroup of G in an Abelian Group?
- jr16
- · Replies 11 ·
Drawing flow lines of an irrotational and sourceless flow
- d2j2003
- · Replies 9 ·
[LOGIC] Proof by Induction in Peano Arithmetic
- Firepanda
- · Replies 2 ·
Solve system of differential equations with y'(t) + z(t) = t and y''(t) - z(t) = e^(-t)
- chatterbug219
- · Replies 5 ·
Show line through point that is tangent to f(x)does not exist
- Painguy
- · Replies 2 ·
Proving the Salvage of a Divisibility Statement with Relatively Prime Numbers
- DrAlexMV
- · Replies 1 ·
Finding the axis of rotation for composed rotations in R3
- skyturnred
- · Replies 3 ·
Area of cardioid r = 2sin(θ) - 2 in first quadrant
- IntegrateMe
- · Replies 3 ·
Nested open sets whose intersection is closed and non-empty
- cragar
- · Replies 7 ·
Evaluate where F(x) is differentiable
- sprite1608
- · Replies 3 ·
Using laplace transforms to solve system of (two) equations
- fufufu
- · Replies 5 ·
Intuition and Proofs: A Scientist's Perspective
- 3.141592654
- · Replies 4 ·
Why is a sum less-than-or-equal to an integral?
- s3a
- · Replies 1 ·
How to Calculate the Mass of a Pyramid Using Triple Integrals?
- 1MileCrash
- · Replies 6 ·
Integrating a trig function divided by a trig function
- podcastube
- · Replies 1 ·
Why Do We Calculate the Probability of Phone Failure After Two Years?
- IntegrateMe
- · Replies 3 ·
Finding the Residue of this function
- d2j2003
- · Replies 7 ·
Compute the length of the cardioid below the x-axis?
- IntegrateMe
- · Replies 1 ·
Heat equation with periodic boundary conditions using separation of variables
- Gregg
- · Replies 17 ·
Is the Power Set of Cartesian Products Correct?
- charmedbeauty
- · Replies 5 ·
Actually calculating the Lebesgue Outer Measure of a set
- jdinatale
- · Replies 1 ·
To show a ring of order p (prime) is isomorphic to the integers mod p.
- rachellcb
- · Replies 1 ·
Proving x=y or x=-y from x2=y2.
- mishima
- · Replies 2 ·
Show <a in D8 : a^2=1> is not a group
- Daniiel
- · Replies 1 ·
Prove a limit using inequalities
- Hernaner28
- · Replies 1 ·
Induction with sum on left and right side.
- Tremoi
- · Replies 1 ·
First-order equations causing some trouble (for newbie)
- Pzi
- · Replies 2 ·
Why Must t Be Greater Than Zero in This Differential Equation?
- jwqwerty
- · Replies 2 ·
Showing a vector field is irrational on
- tamintl
- · Replies 2 ·
Finding Coordinates of last Triangle Vertex
- monch
- · Replies 3 ·
Number theory - quadratic residues
- yeland404
- · Replies 1 ·
Unit step function notation in Laplace transform problems
- fufufu
- · Replies 1 ·
Derivative of ((1 + √x) / ∛(x²))³
- nesan
- · Replies 7 ·
Series Comparison Test for Sum of (1/(sqrt(n^2+1))) and (1/(2n))
- theBEAST
- · Replies 2 ·
Finding integrading factor for differential equation
- Lily@pie
- · Replies 19 ·
Amount of force on a trapezoidal surface following solution
- IntegrateMe
- · Replies 2 ·
Trigonometry practice questions
- Michael_Light
- · Replies 1 ·
Prove by Induction the 11^(n+1)+12^(2n-1) is dvisible by 133.
- teroenza
- · Replies 6 ·
Discrete math set theory sum problem
- charmedbeauty
- · Replies 17 ·
Solve Cosine IND Limit Without L'Hospital
- Hernaner28
- · Replies 6 ·
Taylor expansions in two variables
- mimsy57
- · Replies 2 ·
Integral Test: What should I compare this series with to prove it's convergence?
- theBEAST
- · Replies 1 ·
Solving an indeterminate 0/0 limit without L'Hospital
- Hernaner28
- · Replies 5 ·
Proving the Limit of (z/\bar{z})2 Does Not Exist
- Rubik
- · Replies 3 ·
Proving this meromorphic function has a primitive in punctured plane
- Poopsilon
- · Replies 6 ·