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23,265 results
We will determine the limit of the quadratic formula as (a, b, c) goes to (0, 0, 0). This is going to be a fun one! Check out more limits ...
19,452 views
1 day ago
Try Brilliant with a 30-day free trial 👉 https://brilliant.org/blackpenredpen/ ( 20% off with this link!) I created this quartic equation ...
31,946 views
8 days ago
We will tackle a famous calculus problem using the definition of the derivative, forcing even the most confident students to dig ...
262,109 views
1 year ago
0:00 100 integrals part 2 coming soon 1:10 integral of e^(-x^2) from -inf to inf without using polar coordinates. 14:06 check out ...
724,443 views
We know i^0=1 but what is 0^i? In fact, it turns out 0 to the i-th power is another undefined expression. This is a very interesting ...
482,321 views
5 years ago
I was driving back home and wondered if the quadratic formula still works if a, b, c are not constants? In fact, what if a, b, and c are ...
70,190 views
10 days ago
---------------------------------------- Big thanks to my Patrons for the full-marathon support! Ben D, Grant S, Erik S. Mark M, Phillippe S.
67,903 views
2 weeks ago
0:00 why I don't use LIATE (also called LIPTE) for integration by parts 0:17 integral of x^2*ln(x) 2:11 integral of x*sin(x) 3:55 check ...
318,475 views
2 years ago
I want the area under the curve y=ln(x) from 1 to some number t to be 2, but how can we achieve this? Not only do we have to use ...
48,206 views
3 weeks ago
The definition of derivative is the foundation of differential calculus. However, many students tend to ignore it and want to use the ...
358,478 views
I asked a math Ph.D. @drpeyam to explain the topologist sine circle (topologist sine curve) from the book "Real Analysis" by ...
477,815 views
Integration by parts by using the DI method! This is the easiest set up to do integration by parts for your calculus 2 integrals.
1,435,569 views
8 years ago
--------------------------------------------------------------------------------------------------- ***Thanks to ALL my lovely patrons for supporting my ...
98,218 views
3 years ago
132,099 views
1 month ago
Here's a very classic false proof based on the idea that sqrt(ab) vs sqrt(a)*sqrt(b) if a and b are both negative. The math mistake is ...
1,497,536 views
4 months ago
This is my first video on a multi-variable limit that you will see in your Calculus 3 class. We will evaluate the limit of y/x as (x,y) goes ...
91,204 views
Learn how to solve an exponential equation with two different bases. We will go over two ways. Be sure to remember the rules of ...
719,270 views
We will solve a tricky inequality x(x-1) is greater than (x-1)/x. This is from an A-level exam from the UK for high school students.
146,885 views
2 months ago
We will solve a very interesting square root equation sqrt(5-x)=5-x^2 with infinitely nested square roots. This is a math speed run!
1,117,620 views
I noticed that sec(sin^-1(x) is actually the derivative of inverse sin(x) when I was teaching my precalculus class on Zoom!
84,030 views
We will solve 4 impossible-looking equations, sqrt(x)+sqrt(-x)=2, ln(x)+ln(-x)=0, e^x+e^(-x)=0, and sin(x)+sin(-x)=2. From verifying ...
539,402 views
Just a quick and super informal video showing my reaction to blackpenredpen's “One third of all positive integers are even” video.
68,766 views
6 years ago
Blackpenredpen vs. Dr. Peyam on convergent series! Calculus teachers battle! Uncut, real version, not staged. Who wings?
143,672 views
why 0! should be 1, To support my channel, you can visit the following links T-shirt: https://teespring.com/derivatives-for-you ...
528,493 views
We will find all real and complex solutions to the "triple exponential" equation 8^x+4^x+2^x=14 that I created. This is a great ...
281,211 views