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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

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