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If every infinite subset is open, is the topology discrete?
- madness
- · Replies 12 ·
Finding the limit of (2^n + 3^n) / 4^n as n approaches infinity
- steve2212
- · Replies 13 ·
Derivative Word Problem - US Population
- bobraymund
- · Replies 10 ·
Calculating Rate of Change of Water in a Semi-Circular Bathtub
- songoku
- · Replies 6 ·
Complete ordered fields are Archimedean
- quasar987
- · Replies 9 ·
Complex and upper triangular matrices
- sassie
- · Replies 5 ·
Discrete math:propositional logic
- svishal03
- · Replies 2 ·
Equivalent of 1/n^(a) in the neighborhood of +infinity
- penguin007
- · Replies 2 ·
Does an expanding sequence of balls cover an unbounded metric subspace?
- fraggle
- · Replies 2 ·
Solving Partial Fractions with Integration
- nameVoid
- · Replies 1 ·
Showing $\bar{A} \subseteq C$ in a Metric Space (X,d)
- latentcorpse
- · Replies 24 ·
Can the Parabolic Cylinder Function Solve a 2nd Order D.E. with a Constant?
- hotcommodity
- · Replies 2 ·
What is the type of discontinuity at the origin for the function 2x^y/x^4+y^2?
- kazthehack
- · Replies 5 ·
Solving for r in compound interest equation 10^6 = (2000/r)(e^40r - 1)
- EV33
- · Replies 3 ·
Calculating Maclaurin Series for $\frac{1}{1+cos^2(x)}$
- .....
- · Replies 3 ·
Real Numbers and Equality: Can x+y=4 Be Proven from x2-4x=y2-4y?
- crakajackxx
- · Replies 4 ·
Is My Disk Method Calculation Correct for Finding Volume?
- TheTaoOfBill
- · Replies 3 ·
Linear Algebra: Characterizations of invertible matrices
- freeski
- · Replies 3 ·
Showing f:[0,1)→S¹ is continuous but not a homeomorphism
- latentcorpse
- · Replies 16 ·
AP Calc - Find a Derivative Formula
- bobraymund
- · Replies 2 ·
2nd derivative, is my answer correct
- neutron star
- · Replies 4 ·
Solving Minimization Problem: Find Smallest Beam Length
- 3.141592654
- · Replies 7 ·
Prove that f_{k+1}f_k - f²_{k+1} = (-1)^{k+1} by induction
- roam
- · Replies 4 ·
Chain Rule with partial derivatives
- widmoybc
- · Replies 8 ·
Volumes by Slicing and Rotation About an Axis
- TheTaoOfBill
- · Replies 4 ·
Solving 4-Coupled ODEs with Mathematica
- Qyzren
- · Replies 2 ·
Finding a, b, c, d such that f(f(x)) = x for rational functions
- nietzsche
- · Replies 11 ·
Single Variable function, local max/min is absolute max/min
- calorimetry
- · Replies 2 ·
Open cover which has no finite subcover
- tracedinair
- · Replies 2 ·
Prove that (-1,1) is homeomorphic to R (real numbers)
- madness
- · Replies 13 ·
Thin Plates with Constant Density (Calculus II)
- dm41nes
- · Replies 2 ·
Mean and standard deviation problem
- snoggerT
- · Replies 3 ·
Finding the derivative of 7sin(3x)·arcsin(x)
- buyerat
- · Replies 6 ·
Finding B^n for a matrix with real number exponent n
- MechaMZ
- · Replies 8 ·
Verify Multivariable Limits w/ Delta-Epsilon Arguments
- Volt
- · Replies 1 ·
Where does the 4 come from in the derivative of an integral?
- juice34
- · Replies 4 ·
Arc length of r(t) = <10√2, e^10t, e^-10t> from t = 0 to 1
- megr_ftw
- · Replies 1 ·
How Do You Calculate the Salt Concentration in a Tank Over Time?
- KillerZ
- · Replies 4 ·
Proving Continuous Function: Epsilon-Delta Proof
- latentcorpse
- · Replies 4 ·
Solving a Basic Limit Problem Using Conjugate Multiplication
- Dissonance in E
- · Replies 3 ·
Flow in a circular duct: Simsons Rule
- mcooper
- · Replies 2 ·
Making an inexact differential equation exact
- jumbogala
- · Replies 1 ·
Proving Discrete Topology: Topology Problem on Set of Integers
- mathshelp
- · Replies 1 ·
Complex contour integral of Log(z)/z around unit circle
- ryanj123
- · Replies 13 ·
Limit of a squareroot combination.
- Dissonance in E
- · Replies 2 ·
Finding the pattern in two number series with unknowns
- Dell
- · Replies 2 ·
Understanding Open Sets and Homeomorphisms on the Unit Circle
- gmn
- · Replies 1 ·
Triangulation of Convex Polygon: Prove Cn-2 Ways
- dancergirlie
- · Replies 3 ·
Parametrization - circle defined by plane intersection sphere
- forty
- · Replies 2 ·
Finding constants for y'' - 2y' + 6y = 0 with boundary conditions
- jumbogala
- · Replies 4 ·
How Does the Limit of (x^2-17x+72) / sin(x-9) Evaluate as x Approaches 9?
- Slimsta
- · Replies 7 ·
Orthogonal vector spaces and matrices
- julie94
- · Replies 1 ·
How Much Paint for a Hemispherical Dome Using Differentials?
- maladroit
- · Replies 2 ·
Plotting a triangle formed by 3d vectors in maple
- kyva1929
- · Replies 5 ·
Is the derivative of (ln x)^2 a u-sub?
- amb1989
- · Replies 5 ·
Trouble solving this Determinant
- shiri
- · Replies 1 ·
Proving c_0 is closed in l^∞
- Mosis
- · Replies 1 ·
Find the 2nd Derivative - Basic Calc
- bobraymund
- · Replies 3 ·
Separable Differential Equation (Perfect Derivative)
- scud0405
- · Replies 13 ·
Determine if series 3/n*sqrt(n) converges or diverges.
- NastyAccident
- · Replies 3 ·
Graphing the parametric equation x = sin(t), y = cos(t)
- DMOC
- · Replies 11 ·
Finding Cartesian equation of parametric surface.
- Ral
- · Replies 1 ·
Multiplying permutations (246)(12)(47)
- DEMJ
- · Replies 8 ·
Curve and tangent of a surface intersected by a plane
- Ral
- · Replies 5 ·
Integration Problem: Can't 'See' How It's Done
- Skuzzy
- · Replies 8 ·
Find equation of a plane containing two lines
- hachi_roku
- · Replies 7 ·
If rank(T²)=rank(T), are the range and null space of T disjoint?
- guroten
- · Replies 2 ·
How Do You Calculate the Volume of an Arch Dam Using the Shell Method?
- Sentral
- · Replies 1 ·
Prove Dyadic Rationals are Dense in R
- Newtime
- · Replies 5 ·
Using chain rule to differentiate x^x
- Shakas
- · Replies 3 ·
Find the Derivative - Basic Calculus
- bobraymund
- · Replies 3 ·
Proving finite approximation of bounded sets in n-space
- cookiesyum
- · Replies 6 ·
Finding a tangent to y=x³ parallel to 3x-y-6=0
- QUITE RIGHT
- · Replies 1 ·
Does XOR distribute over AND in Boolean algebra?
- tnutty
- · Replies 1 ·
What Are the Subgroups of a Group Under Isomorphism?
- cmj1988
- · Replies 2 ·
Calculus - Derivative of a Function
- bobraymund
- · Replies 4 ·
What is the Energy of a Signal with Rectangular Components?
- banfina
- · Replies 2 ·
Substitution Differential Equation
- KillerZ
- · Replies 3 ·
First Order ODE problem (ipod battery)
- Clef
- · Replies 5 ·
Solving the Inverse Matrix Problem: Constraints and Proof
- Naome666
- · Replies 6 ·
Making a piecewise function continuous and differentiable at x = 0
- devilazy
- · Replies 1 ·
Implicit differentiation on x^3 + y^3 = 4xy + 1
- the_ace
- · Replies 4 ·
Find Absolute Maxima and Minima of f(x) on [-2,2]
- the_ace
- · Replies 4 ·
Finding dy/dx: Differentiating (4sinx)(cosy)=1 with respect to x
- the_ace
- · Replies 3 ·
What is the derivative of (sinx+cosx)secx?
- devilazy
- · Replies 5 ·
Equation of a line that has to be tangent
- QUITE RIGHT
- · Replies 1 ·
Finding a Convergent Sequence with a Limit of 1
- DPMachine
- · Replies 6 ·
How Do I Apply Binomial Expansion for x^{-1/2}(2-x)^{-1/2} Approximations?
- Nusc
- · Replies 2 ·
Srong topology, but really a question on covering spaces
- Office_Shredder
- · Replies 0 ·
Finding original algebraic equation
- -EquinoX-
- · Replies 4 ·
Solve Integral of 2x/(1-x^4) dx with lxl<1
- kira137
- · Replies 7 ·
How can substitution make integration by parts easier?
- nameVoid
- · Replies 4 ·
Why does translating a random variable by a constant not change entropy?
- smk037
- · Replies 2 ·
Division algorithm and unique Gaussian integers
- Proggy99
- · Replies 1 ·
How to find P1 and P2 such that P1, P2, and P1+P2 idempotent
- julie94
- · Replies 11 ·
Prove that you've got a probability density function
- pyro_peewee
- · Replies 1 ·
Computing a Geometric Power Series with Cosine Terms
- quasar_4
- · Replies 3 ·
Two Minimal Prime Ideals in k[X,Y]/<XY>
- Dragonfall
- · Replies 3 ·
Show (AB)^p = A^p B^p when AB = BA
- nietzsche
- · Replies 9 ·
Are Elements Formed by Linear Transformations Linearly Independent?
- awef33
- · Replies 1 ·