The Math Sorcerer
Thursday, December 17, 2015
The Quaternion Group
Definition of the Symmetric Group
Proof that f(x) = 1/x is Continuous on (0, infinity) using Delta-Epsilon
Prove the function f:Z x Z → Z given by f(m,n) = m + n - 3 is Onto(Surje...
Prove the function f:Z^+ → Z given by f(n) = (-1)^n * n is Injective(one...
Prove that f(x) = sqrt(|x|^3) is Differentiable at x = 0
Prove that W = {(x_1,...,x_n)| sum(x_i) = 0} is a Subspace of the Vecto...
Prove the function f:Z x Z → Z given by f(m,n) = 2m - n is Onto(Surjective)
Prove the Set of all Odd Functions is a Subspace of a Vector Space
Proof that f(x) = x*|x| is Differentiable at x = 0
Determine if W = {(a,b,c)| a = b^2} is a Subspace of the Vector Space R^3
Introduction to Cycle Notation in the Symmetric Group
Cycle Multiplication Example in the Symmetric Group S_4
Determine if W is a Subspace of a Vector Space V Polynomial Example
Cycle Multiplication Example in the Symmetric Group S_7
Determine if W= {(a, b, c)| a ≤ b ≤ c} is a Subspace of the Vector Space...
Multiplying Permutations in Array(Two-Line) Notation in the Symmetric Gr...
Multiplication of Cycles in the Symmetric Group S_6
Graph the Hyperbola (y + 2)^2/4 - (x - 1)^2/9 = 1
Prove the Set of all Bounded Functions is a Subspace of a Vector Space
Determine if W = {(a, b, c)| b nonnegative} is a Subspace of the Vector ...
Converting Cycle Notation to Array(two-line) Notation in the Symmetric G...
Determine if the Unit Sphere is a Subspace of the Vector Space R^3
Writing a Permutation in the Symmetric Group S_5 in Cycle Notation
Wednesday, December 16, 2015
Proving two Spans of Vectors are Equal Linear Algebra Proof
Multivariate Limit of (x^4 + y^4)/(x^2 + y^2) using Polar Coordinates
Limit of sqrt(x^2 + y^2)ln(sqrt(x^2 + y^2)) using Polar Coordinates and ...
Multivariable Calculus Limit of y^2/(x^2 + y^2) as (x,y) approaches (0,0)
Parametric and Symmetric Equations of a Line Parallel to v = (-2,-4,6) P...
Solve the Nonlinear System x^2 + y^2 = 4, 2x^2 - 3y^2 = -12
Equation of the Conic given the Length of the Major Axis, Eccentricity, ...
Convert the Cylindrical Coordinate (2, pi/4, 8) into Rectangular Coordin...
Equation of Conic with Center (0,0) Focus (4,0) and Eccentricity = 7/5
Multivariable Calculus Limit of x^2y/(x^2 + y^2) using Polar Coordinates
Solve the Nonlinear System of Equations 2x^2 - y^2 = 16, |x| = |y|
Find the Equation of the Conic given the Eccentricity, Vertex, and Center
Convert the Cylindrical Coordinates (4, pi/6, 3) to Rectangular Coordinates
Multivariable Calculus Limit of (x - y - 1)/(sqrt(x - y) - 1) by Rationa...
Determine if the Relation is a Function Example with Diagram
Equation of Conic with Vertex (0, 2) Center (0, 0) and Eccentricity = 4/3
Converting the Parametric Equations x = e^t and y = e^(-2t) to Rectangul...
Tuesday, December 15, 2015
How to Convert Cylindrical Coordinates to Rectangular Coordinates
Equation of Conic with Eccentricity = 1/2 Center (0,0) and Focus (2,0)
Solve the Nonlinear System of Equations x^2 + y^2 = 4, 7x^2 + 7y^2 = 2
Finding the Coterminal Angle of Least Positive Measure
Limit of sin(x^2 + y^2)/(x^2 + y^2) using Polar Coordinates and L'Hopita...
Multivariable Calculus The Limit of x/(x + y) as (x, y) approaches (0, 0)
Parametric and Symmetric Equations given a Point and a Parallel Vector
Equation of Conic with Eccentricity = 2/3 Focus (0,-1) and Center (0,0)
Solve 2sin^2(x) + 3sin(x) + 1 = 0
Find the Complement and Supplement of 45 Degrees
Solve sin(x)*cot(x) - sin(x) = 0
Find the Complement and Supplement of 70 Degrees
Monday, December 14, 2015
Convert pi/3 to Degrees
Write the Parametric Equations x = t - 1, y = (1/3)t^2 + 1 in Rectangula...
Write the Parametric Equations x = t - 1, y = (1/3)t^2 + 1 in Rectangula...
Find the Arc Length with r = 17cm and theta = 2pi/7
Convert 7pi/4 to Degrees
Find the Complement and Supplement of 40 Degrees
Maclaurin Series for f(x) = e^(-x)
Write the Parametric Equations x = ln(t), y = 3ln(t) in Rectangular Form
Given Supplementary Angles Find the Angles
Converting Radians to Degrees Example with pi/6
Find the Area of the Sector with r = 17.2m and theta = pi/3
Find the Area of the Sector with r = 17.2m and theta = pi/3
Complement of Supplement of an Angle in Radians pi/7
Equation of Conic with Eccentricity = 1 Focus (-3,0) and Vertex (0,0)
Converting Degrees to Radians Example with 50 Degrees
Write the Parametric Equations x = sqrt(t), y = t^4 - 1 in Rectangular Form
Given Complementary Angles Find the Angles
Angle of Least Positive Measure Coterminal with -pi/6
Find the Complement and Supplement of an Angle in Radians pi/6
Find the Equation of the Conic with Eccentricity = 1 Focus (0, 6) and Ve...
Thursday, December 10, 2015
Proof that sum(sin(n)/n) Converges using Dirichlet's Test
Proving a Function is a Linear Transformation F(x,y) = (2x + y, x - y)
If Lambda is an Eigenvalue of A then Lambda^2 is an Eigenvalue of A^2 Proof
System of Linear Equations with Invertible Coefficient Matrix has a Uniq...
Finding all Real Eigenvalues of a 3 x 3 Matrix
Determine if T is a Topology on X
Proof that f(x) = x^2 is Uniformly Continuous on (0, 1)
Two Topologies on X whose Union is not a Topology on X
The Intersection of Topologies on X is a Topology on X Proof
Monday, December 7, 2015
The Discrete Metric is a Metric Proof
Sunday, December 6, 2015
Find the Quotient Group (Z_3 x Z_2)/({0} x Z_2) Example with Direct Product
Finding the Subspace Topology Easy Example
The Subspace Topology is a Topology Proof
Removable and Nonremovable Discontinuities of f(x) = (x + 1)/(x^2 + 3x+ 2)
Computing a Limit by Rationalizing (sqrt(x + 3) - sqrt(3))/x as x approa...
Indefinite Integral of 3x*csc^2(7x^2) with u-substitution
Wednesday, December 2, 2015
Prove W = {(a, b) | a = -b} is a Subspace of R^2
Tuesday, December 1, 2015
Finding the Quotient Group Example with Integers
Two Subspaces of R^2 whose Union is not a Subspace
Determine if W is a Subspace of a Vector Space V
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