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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: 31590 virtuallymath
In this video you learn how to use the gradient to find the direction of maximum increase and decrease.
Views: 1256 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: 3208 virtuallymath
In this video you learn how to construct a binomial cumulative distribution function using a graph, and a table.
Views: 1820 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: 2554 virtuallymath
In this video you learn how to find the components of a displacement vector.
Views: 3100 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: 12163 virtuallymath
In this video you learn how to find the slope of the inverse of a function.
Views: 2160 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: 297 virtuallymath
In this video you learn how to draw i,j, and k unit vectors, and what purpose they serve.
Views: 410 virtuallymath
In this video you learn how to find the dot products of various unit vectors with themselves.
Views: 788 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: 1356 virtuallymath
In this video, you learn how to plot points in three dimensional space.
Views: 134 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: 886 virtuallymath
In this video you learn how to find a gradient for a function of three variables
Views: 75 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: 376 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: 99 virtuallymath
In this video you learn how to find a gradient vector at a point, and how to sketch a curve.
Views: 168 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 find the equation of a sphere when it's tangent to a plane.
Views: 114 virtuallymath
In this video you learn how to find the distance between two points located in three dimensional space.
Views: 102 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 vector, and how to plot the gradient vector and the associated level curve.
Views: 153 virtuallymath
In this video you learn how to find the tension in a rope when a weight is suspended from it.
Views: 37 virtuallymath
In this video you learn how to find the equation of a sphere from it's center and radius.
Views: 80 virtuallymath
In this video you learn how to find the center and radius of a sphere. The numbers used are whole numbers in this example. You have to use the process of completing the square.
Views: 75 virtuallymath
In this video, you learn how to find the speed of an object as it strikes the ground using conservation of energy.
Views: 139 virtuallymath
In this video, you learn how to draw a vector, and several scalar multiples of the vector.
Views: 30 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: 77 virtuallymath
In this video you learn how to find the slope of an inverse function.
Views: 70 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: 112 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: 35 virtuallymath
In this video you learn how to turn a function into a probability density function. The objective is to find the c that normalizes the functions, meaning makes the area under the function equal to one.
Views: 301 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: 313 virtuallymath
In this video, you learn how to find the probability distribution function of a continuous random variable.
Views: 60 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: 5187 virtuallymath
In this video you learn how to draw a positive scalar multiple of a vector. The process is shown step by step.
Views: 42 virtuallymath
In this video you learn how to find a joint probability function for two random variables.
Views: 294 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: 253 virtuallymath
In this video you learn how to solve a vector equation.
Views: 119 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: 30 virtuallymath
In this video you learn how to apply L'Hopitals rule twice to find the limit of a ratio of two functions.
Views: 27 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: 82 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: 138 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 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: 30 virtuallymath
In this video you learn how to find a directional derivative.
Views: 21 virtuallymath