Courses from 1000+ universities
Coursera sees headcount decrease and faces lawsuit in 2023, invests in proprietary content while relying on Big 5 partners.
600 Free Google Certifications
Business Development
Marketing
Programming Languages
The Analytics Edge
Competitive Strategy
Learning How to Learn: Powerful mental tools to help you master tough subjects
Organize and share your learning with Class Central Lists.
View our Lists Showcase
The Legendary n^2+n+41 (why do we need math proofs?).An Easy Putnam Exam Problem!.Proving sqrt(2) is irrational by using the rational zero theorem.Why do you rationalize the denominator? (here's my reason).That Time Euler Was Wrong.
Master calculus 2 integral techniques with blackpenredpen's 6-hour material, covering u-substitution, trigonometric substitution, integration by parts, and more.
Quadratic Equations vs. Equations in Quadratic Form. Find the complex solutions to this quadratic equation by completing the square.Factoring 5-term polynomials by grouping. Find an equation of the line in slope-intercept form (given 2 points, parallel,…
How I Make My Calculus Exams Harder!.Solving my Calc 2 Exam#3 (Series & Power Series). Series Are NOT Scary (part 3).Series are NOT scary! (Part 1: test for divergence, telescoping, geometric, p-series)
An unfair calculus 1 homework question. When is the best time to take the derivative? Why the area under the tangent line of 1/x is special. When calculus teachers don't think the derivative question is hard enough. Why is the derivative of e^x equal to…
Learn to apply differential equations in real-world scenarios with blackpenredpen. Expect 2-3 hours of engaging material including Newton's Law of Cooling and Logistic Differential Equation.
Dive into complex integrals with blackpenredpen's playlist. Master techniques like trig substitution, brute-force partial fraction, and Euler substitution in 4-5 hours.
Learn first-order linear differential equations with blackpenredpen. Master integrating factors and solve real-world problems in 1-2 hours.
Learn to solve exact differential equations with blackpenredpen. Master strategies, examples, and create your own equations in 1-2 hours.
Master special integrating factors in differential equations with blackpenredpen's material, requiring 1-2 hours of study. Dive into almost exact equations and various forms of factors.
Master differential equations via substitution with blackpenredpen. Learn to solve equations in the form of dy/dx=G(ax+by), Bernoulli's equations, and more in 1-2 hours.
Master homogeneous second-order linear differential equations with blackpenredpen. Learn about auxiliary equations, reduction of orders, and checking for linear dependence/independence in 1-2 hours.
Master the method of undetermined coefficients with blackpenredpen. Solve nonhomogeneous first and second-order differential equations in under an hour.
Learn to solve y''+y=tan(t) using Variation of Parameters in less than an hour with blackpenredpen.
Learn differential equations via the elimination method with blackpenredpen. Master D notation and undetermined coefficients in 1-2 hours.
Get personalized course recommendations, track subjects and courses with reminders, and more.