Videos uploaded by user “virtuallymath”

In this video you learn how to turn a function into a probability density function. The steps are outlines in detail, and at the end, you see a graph of the PDF for improved understanding.

Views: 30623
virtuallymath

In this video you learn how to use conservation of energy to find the speed of a bob at a low point in a pendulum.

Views: 3059
virtuallymath

In this video you learn how to use the gradient to find the direction of maximum increase and decrease.

Views: 1038
virtuallymath

In this video you learn how to construct a binomial cumulative distribution function using a graph, and a table.

Views: 1704
virtuallymath

In this video you learn how to graph points in 3d. You learn how to draw coordinate axes, and plots points as ordered triples.

Views: 10390
virtuallymath

In this video you learn how to find a missing vector given three other vectors and the resultant. This kind of exercise is common in physics.

Views: 2372
virtuallymath

In this video you learn how to find the components of a displacement vector.

Views: 2983
virtuallymath

In this video you learn how to find the slope of the inverse of a function.

Views: 2147
virtuallymath

In this video you learn how to find the dot products of various unit vectors with themselves.

Views: 709
virtuallymath

In this video you learn how to draw i,j, and k unit vectors, and what purpose they serve.

Views: 347
virtuallymath

In this video you learn how to derive the probability distribution function for the number of heads within two tosses of a coin.

Views: 1239
virtuallymath

In this video you learn how to derive the probability function for the number of heads in three tosses of a coin.

Views: 32
virtuallymath

In this video you learn what the difference is between a vector and scalar quantity. To make the example visual, you also learn what the difference between distance and displacement is.

Views: 33
virtuallymath

In this video you learn how to find the equation of a sphere from it's center and radius.

Views: 74
virtuallymath

In this video you learn how to find the domain of a composition of two functions. It's taken from an AP kind of question.

Views: 8
virtuallymath

In this video you learn how to construct a 3d coordinate system, and how to mark points on the coordinate axes, and coordinate planes.

Views: 347
virtuallymath

In this video you learn how to find the terminal point of a given if you're given the initial point, and the components of a vector.

Views: 13
virtuallymath

In this video you learn how to find the midpoint of a 3d line segment, and how to plot the segment in 3d space.

Views: 251
virtuallymath

In this video, you learn how to plot points in three dimensional space.

Views: 118
virtuallymath

In this video you learn how to derive a probability function for a binomial random variable. This example deals with the number of boys in a family of three kids.

Views: 96
virtuallymath

In this video, you learn how to find the speed of an object as it strikes the ground using conservation of energy.

Views: 94
virtuallymath

In this video, you learn how to solve a work rate problem, and how to interpret the solution physically.

Views: 38
virtuallymath

In this video you learn how to find a gradient for a function of three variables

Views: 70
virtuallymath

In this video you learn how to find a vector given its length and the angle it makes with respect to the positive x axis.

Views: 799
virtuallymath

In this video you learn how to find the distance between two points located in three dimensional space.

Views: 90
virtuallymath

In this video you learn how to find the slope of an inverse function.

Views: 66
virtuallymath

In this video you learn how to find a tangent line using a gradient.

Views: 51
virtuallymath

In this video you learn how to get a probability density function from a cumulative distribution function. This example deals with the exponential distribution.

Views: 53
virtuallymath

In this video you learn how to find a gradient vector, and how to plot the gradient vector and the associated level curve.

Views: 130
virtuallymath

In this video you learn how to find the equation of a sphere from a diameter.

Views: 99
virtuallymath

In this video you learn how to find the tension in a rope when a weight is suspended from it.

Views: 33
virtuallymath

In this video you learn how to find the equation of a sphere when it's tangent to a plane.

Views: 108
virtuallymath

In this video, you learn how to find a unit vector. You see the steps outlined, and we also review how to build a coordinate system, and graph a vector in the plane.

Views: 111
virtuallymath

In this video you learn how to express, given an initial and terminal point, a vector in component form, and how to draw it translated to the origin.

Views: 246
virtuallymath

In this video you learn how to draw a negative scalar multiple of a vector. The process is shown step by step and color coded so you can see more easily what to do.

Views: 491
virtuallymath

In this video you learn how to solve a common type of exercise

Views: 33
virtuallymath

In this video you learn how to solve a basic vector equation. The key to doing this well is to treat the vectors like variables and move them around in a similar way so it's fast and familiar.

Views: 4979
virtuallymath

In this video you learn how to find a vector given its length and the angle it makes with respect to the positive x axis.

Views: 29
virtuallymath

In this video you learn how to find the gradient of a function, how to graph the gradient in the x y plane, how to plot level curves, and how to evaluate the gradient at two different points.

Views: 281
virtuallymath

In this video, you learn how to find the probability distribution function of a continuous random variable.

Views: 55
virtuallymath

In this video you learn how to find a gradient vector at a point, and how to sketch a picture of it in the coordinate plane together with a level curve of the function.

Views: 166
virtuallymath

In this video you learn how to find a joint probability function for two random variables.

Views: 287
virtuallymath

In this video you learn how to draw a positive scalar multiple of a vector. The process is shown step by step.

Views: 41
virtuallymath

In this video you learn how to find the center and radius of a sphere with fraction as the numbers involved. You have to use the process of completing the square.

Views: 72
virtuallymath

In this video you learn how to find the standard equation of a parabola.

Views: 27
virtuallymath

In this video you learn how to find a vector given its length and the angle it makes with respect to the positive x axis.

Views: 81
virtuallymath

In this video you learn how to express a vector in component form. This example uses points expressed as fractions. You also learn how to scale axes in a convenient way to make the picture drawing process easier and more neat.

Views: 132
virtuallymath

In this video you learn how to find a gradient vector at a point, and how to sketch the gradient.

Views: 25
virtuallymath

In this video you learn how to write an equation of a circle in standard form so you can see the center and radius easily.

Views: 29
virtuallymath

In this video you learn how to find a directional derivative.

Views: 21
virtuallymath

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