The Math Sorcerer
Monday, December 29, 2014
Derivation of arcsinh(x) the Inverse Hyperbolic Sine Function
Find the Hydronium Ion Concentration given the pH
Related Rates Revenue Word Problem
Find the Total Differential of the Multivariate Function f(x,y,z) = e^(x...
Find the pH given the Hydronium Ion and determine if Acidic or Alkaline
Find the Minimum and Maximum Usual Values
Total Differential of Multivariate Function f(x, y) = x^3y^4 + x^2y^3 + 12
Determining if a vector is a linear combination of other vectors
Related Rates Melting Snowball
Related Rates Melting Snowball
First Order Partial Derivatives of f(x, y) = ln(x^4 + y^4)
Indefinite Integral of 1/(1-sin(x))
Derivative of arcsin(x) derivation
Derivative of f(x) = sqrt(ln(x))
Find dy/dx given y^4 - x^2 = 2
Derivative of natural logarithm with chain rule example
Finding dy/dx at specified values
First Order Partial Derivatives of f(x,y) = x^4 6x^2y^2 2y^3 - 3x^2
Sunday, December 28, 2014
Optimization Maximum Profit Word Problem
Optimization Maximum Revenue Word Problem
Find the Cost Function given the Marginal Cost and Fixed Costs
Maclaurin Series of f(x) = sin(3x)cos(3x) using Identities
Time it takes to double your money Compound Interest
Demand Equation Find dp/dx and Interpret Word Problem
Midpoint of the line connecting (-2, 5) and (6, 7)
Midpoint of the line segment connecting (1, 3) and (4, 5)
Taylor Series for f(x) = e^x centered at c = pi using the definition
Maclaurin Series of 1/(1 + x)^4 using the Binomial Series
Indefinite Integral of 1/(1-cos(x))
Coefficient of Variation Example and Explanation
Related Rates Maximum Profit Word Problem
Maclaurin Series for e^(2x)
Maclaurin Series for xcos(2x)
Computing z-scores(standard scores) and comparing them
Saturday, December 27, 2014
Understanding z-scores(standard scores) as a measure of relative standing
Converges or Diverges? sum( (-1)^n n/ln(n + 1), n = 1, 2, ...)
Converges or Diverges? sum( (-1)^n/e^n, n = 1, 2, ...)
Maclaurin Series for sin(x^3)
Converges or Diverges? sum( (-1)^n (n + 1)/n, n = 1, 2, ...)
Calculus Infinite Limits xsec(x) as x approaches pi/2 from the right
Calculus Infinite Limits (4 + x)/(x - 2) as x approaches 2 from the right
Calculus Infinite Limits -3/(x - 1)^2 as x approaches 1 from the left
Calculus Infinite Limits 1/(x - 3) as x approaches 3 from the right
Friday, December 26, 2014
Parametric Equations and Calculus
Thursday, December 25, 2014
Frequency Table and Class Width Example
Monday, December 22, 2014
How to Prove a Set is a Subspace of a Vector Space
How to Prove a Function is Surjective(Onto)
Unit Tangent Vector for Vector-Valued Function
Super Fast Way to Find the Inverse Function
Integration with u-substitution the Antiderivative of (1/x^2)sin(1/x)
Convert the rectangular equation 3x - 2y = 11 into polar form
Graphing a hyperbola that opens left and right
Integration with u-substitution the antiderivative of sech^5(x)tanh(x)
Derivative of h(x) = 3^x * ln(x) using the product rule
Derivative of h(x) = 3^x * ln(x) using the product rule
Converting the polar equation r = 8/(cos(theta) + sin(theta)) into polar...
Listing the possible rational roots/zeros
Converting the polar equation r = -8csc(theta) into rectangular form
Converting the polar equation r = -6sin(theta) - 6cos(theta) into rectan...
Finding the z-score of x with the formula
Converting the polar equation r = sec(theta) into rectangular form
The Constant of Integration is ALWAYS Zero
Find x given the z-score, sample mean, and sample standard deviation
Converting the Polar Equation r = 3sin(theta) into Rectangular Form
Saturday, December 20, 2014
Sum of Harmonic Numbers Induction Proof
Group Theory Proof: If g^n = e then the order of g divides n
Direct Image of Intersection of Sets under an Injective Function Proof
Group Theory Proof: The order of x is the order of x inverse
Proof that if g o f is Injective(one-to-one) then f is Injective(one-to-...
Preimage(Inverse Image) Explanation and Intersection of Sets Proof
Matrix Powers Induction Proof (PDP^(-1))^n = PD^nP^(-1)
Equation of Tangent Line to Graph of arctan(xy) = arcsin(x + y) at (0,0)
Friday, December 19, 2014
Definite Integral of a Vector-Valued Function
Indefinite Integral of a Vector-Valued Function Example 2
Indefinite Integral of a Vector-Valued Function Example 1
Writing cos(arcsin((a - b)/c)) in Algebraic Form
Writing the Trigonometric Function sec(arctan(4x)) as an Algebraic Expre...
Finding the Gradient of a Multivariate Function Example 3
Finding the Gradient of a Multivariate Function Example 2
Gradient of a Multivariate Function Example 1
Second Derivative of Vector-Valued Function Example 2
Second Derivative of Vector-Valued Function Example 1
Derivative of Vector-Valued Function r(t) = (arctan(e^t), arccos(t^3), s...
Derivative of Vector-Valued Function r(t) = e^(3t)i + cos^2(4t)j + sqrt(...
Derivative of Vector-Valued Function r(t) = sqrt(t)i + (1 - t^3)j + sec(...
Limit of a Vector-Valued Function as t approaches Infinity
Limit of a Vector-Valued Function Example
Equation of the Sphere in Standard Form, Center, and Radius
Equation of Sphere given Endpoints of Diameter
Equation of Sphere with Radius 3 and Center (3, -1, 0)
Equation of Sphere with Radius 2 and Center (4, 2, -3)
Distance between Two Points in Space (-3, 2, 5) and (4, 0, 8)
Distance between Two Points in Space (3, 1, 4) and (2, -1, 3)
Dot Product of Vectors given Magnitudes and Angle between them
Angle between vectors u = i - 3j + k and v = 2i + 4j - k
Angle between Vectors u = (3, 1) and v = (2, -1)
Angle between Vectors u = (3, 1) and v = (2, -1)
Unit Vector in the Direction of v = (3, 2, 4) and Opposite of v
Vector with Magnitude 3 in the Direction of u = (1, 2, 3)
Vector with Magnitude 3 in the Direction of u = (1, 2)
Vector with Magnitude 4 in the Direction of u = (0, 3)
Unit Vector in Direction of v = (-1, 3)
Unit Vector in the Direction of v = (4, 7)
Determine if the Vectors are Orthogonal
Magnitude of the Vector v = (3, 0, 4)
Thursday, December 18, 2014
Magnitude of the Vector v = -2i + 3j + 4k
Magnitude of the Vector v = -2i + 3j + 4k
Magnitude of the Vector v = (3, -2, 1)
Magnitude of the Vector v = 2i - k
Magnitude of the Vector v = 2i + 3j
Dot Product of the Vectors u = 3i + 2j + 4k and v = -i + j
Dot Product of the Vectors u = (1, 2, 4) and v = (-3, -2, 0)
Dot Product of the Vectors u = (3, 6) and v = (-2, 4)
Dot Product of the Vectors u = (3, 6) and v = (-2, 4)
Inverse Image(Preimage) of Intersection of Sets Proof
Kernel of a Group Homomorphism is a Subgroup Proof
Wednesday, December 17, 2014
Complex Analysis Laurent Series Example
Laurent Series for f(z) = 1/(z z^2) for |z| greater than 1
Disk(Washer) Method Volume of Solid y = x, y = 0, x = 4 about x = 5
Principle of Mathematical Induction Inequality Proof Video
Derivative of a Constant Function is Zero Proof
Direct Image of Union of Sets Proof: f(A U B) = f(A) U f(B)
Laurent Series of f(z) = 1/(z + z^2) in the punctured unit disk
Cyclic Groups Proof: If x is a generator so is its inverse
Points at which Curve(Cycloid) is not Smooth
Tuesday, December 16, 2014
P-Test and Comparison Test for Integrals Four Examples
Dividing using Long Division (3x^2 + 2x + 5)/(x + 6)
Inverse of Exponential Function f(x) = ln(x - 4) + 2
Solving an Exponential Equation (1/8)^(x + 2) = 32^x
Solving an Equation with a Square Root x - 4 = sqrt(3x - 8)
Shell Method Volume of Solid y = x, y = 0, x = 4 about x = 5
Inverse of Logarithmic Function f(x) = 4log_3(x + 7) - 9
Inverse of Rational Function f(x) = (3x + 2)/(x - 9)
Inverse of Exponential Function f(x) = 2^(x - 6) + 8
Inverse of Logarithmic Function f(x) = 7log_3(x + 1) - 6
Solving 2x^2 - 3x + 1 = 0 using the Quadratic Formula
Finding a_n in a geometric sequence given a_3 and a_8
Finding a_n for a geometric sequence given the first four terms
Monday, December 15, 2014
Inverse of Rational Function f(x) = 2/(x - 3)
Inverse of Rational Function f(x) = 2/(x - 3)
Finding a_6 given a geometric sequence with a_4 and r
Tangent Lines given Parametric Equations
Improper Integral with Two Infinite Limits
Graphing a Rational Function
Concavity and Slope given Parametric Equations
Derivative of f(x) = 1/x Using the Limit Definition
Equation with Two Absolute Values
Proof that if g o f is Surjective(Onto) then g is Surjective(Onto)
Concavity and Parametric Equations Example
Graphing the Inverse Function of f(x) = sqrt(x + 6)
Finding a_1 and r in a geometric sequence given a_2 and a_7
Graphing a Piecewise Function
Arc Length Parametric Equations x = 2cos(t), y = 2sin(t) over [0, 2pi]
Find dy/dx given Parametric Equations x = sin^2(theta), y = cos^2(theta)
Equation of Line Passing through (1,-4) and Perpendicular to x = 4
Equation of Line Passing through (-5,7) and Perpendicular to y = -2
Equation of Line Passing Through (-1,4) and Parallel to x + 3y = 5
Combinations Problem Apples in a Crate
Sunday, December 14, 2014
Equation of Line Passing through (1,6) and Perpendicular to 3x + 5y = 1
Converting the Polar Equation r = cot(theta)csc(theta) Into Rectangular ...
Converting the Rectangular Equation 3x - y + 2 = 0 Into Polar Form
Converting the Rectangular Equation x^2 + y^2 = 4 into Polar Form
Solving an Equation with Negative Exponents
Limit of (e^x + x)^(3/x) L'Hopital's Example
Find dy/dx given Parametric Equations x = t^2, y = 7 - 6t
Converting the Rectangular Equation y^2 = 3x Into Polar Form
Saturday, December 13, 2014
Kernel of a Group Homomorphism is a Normal Subgroup Proof
Limit as x approaches zero of (x^2 + 3x)/x
Laurent Series of f(z) = 1/(z - 3) in the Region |z| greater than 3
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