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106 Videos (Page 2/3)

10:27 Slow English (US)

The famous exponential equation 2^x=2x (ALL solutions)

blackpenredpen - 4 years ago

169,456 views
11:59 Fast English (US)

Why is the derivative of e^x equal to e^x?

blackpenredpen - 4 years ago

233,516 views
6:10 Fast English (US)

geometry is HARD

blackpenredpen - 4 years ago

87,951 views
17:35 Fast English (US)

be careful when an imaginary number is raised to a fractional power

blackpenredpen - 4 years ago

278,864 views
7:06 Fast English (US)

Can 1^x=2?

blackpenredpen - 5 years ago

1,523,320 views
10:25 Fast English (US)

calc 1 final be like (derivative of x^2)

blackpenredpen - 5 years ago

456,906 views
9:45 Fast English (US)

how to solve these HARD integrals

blackpenredpen - 5 years ago

56,338 views
6:32 Fast English

Is e^x=ln(x) solvable?

blackpenredpen - 5 years ago

842,008 views
10:28 Fast English (US)

My First Quintic Equation

blackpenredpen - 5 years ago

1,214,131 views
9:49 Fast English (US)

A Brilliant Algebra Problem

blackpenredpen - 5 years ago

45,954 views
11:11 Fast English (US)

Law of Sine and Law of Cosine Proofs!

blackpenredpen - 5 years ago

52,438 views
10:37 Fast English (US)

Heron's Formula Proof (finding the area of ANY triangle)

blackpenredpen - 5 years ago

248,276 views
16:27 Fast English (US)

just do 1 integral, not 3! (Cauchy's Repeated Integral Formula)

blackpenredpen - 6 years ago

54,040 views
5:14 Fast English (US)

which one is a circle? (precalculus, polar coordinate)

blackpenredpen - 6 years ago

140,621 views
8:50 Fast English (US)

integral of x^x vs integral of x^ln(x) (aren't they both impossible?)

blackpenredpen - 6 years ago

86,367 views
16:56 Commentator English (US)

how WolframAlpha define these non elementary integrals

blackpenredpen - 6 years ago

93,323 views
14:35 Fast English (US)

this is how the natural logarithm was first defined

blackpenredpen - 6 years ago

31,764 views
4:49 Commentator English (US)

can we do the integral of e^x*ln(x)? Hint: use integration by parts & a special function

blackpenredpen - 6 years ago

68,046 views
8:47 Fast English (US)

My favorite infinite series, the sum of sin(n)/n by Fourier Series

blackpenredpen - 6 years ago

20,046 views
10:34 Slow English (US)

100 Integrals (timelapse, 30x, plus unseen ending)

blackpenredpen - 6 years ago

29,080 views
14:57 Fast English (US)

Can y'*y''=y'''? (WolframAlpha didn't find all the solutions)

blackpenredpen - 6 years ago

440,580 views
8:48 Fast English (US)

integration by partial fractions with an irreducible quadratic factor

blackpenredpen - 6 years ago

52,005 views
8:31 Fast English (US)

Pythagorean Theorem & Its Inverse (my favorite proof)

blackpenredpen - 6 years ago

202,329 views
7:53 Fast English (US)

factorial of sqrt(2)?

blackpenredpen - 7 years ago

75,745 views
12:57 Fast English (US)

Complex Fourier Series (fourier series engineering mathematics)

blackpenredpen - 7 years ago

99,616 views
11:47 TBA English (US)

two vibin complex integrals

blackpenredpen - 7 years ago

63,345 views
4:23 Fast English (US)

Dear Tejas, challenge ACCOMPLISHED! (Speed run, Uncut)

blackpenredpen - 7 years ago

1,006,237 views
10:11 Fast English (US)

Innocent looking, but ????

blackpenredpen - 7 years ago

1,177,854 views
13:12 Slow English (US)

Introduction to Hyperbolic Trig Functions

blackpenredpen - 7 years ago

297,208 views
11:23 Fast English (US)

delta y vs. dy (differential)

blackpenredpen - 7 years ago

192,127 views
10:06 Fast English (US)

Horizontal Asymptote, Vertical Asymptote, & Removable Discontinuity

blackpenredpen - 7 years ago

14,278 views
14:43 Fast English (US)

Conditional Probability, (with sample space)

blackpenredpen - 7 years ago

16,832 views
4:13 Slow English (US) A2

LA marathon 2018 start!!

blackpenredpen - 7 years ago

3,620 views
7:45 Fast English (US)

sin(10°)sin(30°)sin(50°)sin(70°) = ? No calculator!

blackpenredpen - 7 years ago

50,518 views
9:59 Fast English (US)

all solutions to x^3=1

blackpenredpen - 7 years ago

214,385 views
19:44 Fast English (US)

Can we have negative factorial?

blackpenredpen - 8 years ago

260,651 views
7:11 Fast English (US)

a coffin math question: log_2(3) vs log_3(5)

blackpenredpen - 8 years ago

202,672 views
7:05 Fast English (US)

my favorite calculus 2 trigonometry integral (two results off by a constant)

blackpenredpen - 8 years ago

123,225 views
19:31 Conversational English (US)

Math for fun, sin(z)=2

blackpenredpen - 8 years ago

1,431,476 views
4:46 Fast English (US)

Laplace transform of 1

blackpenredpen - 8 years ago

76,281 views
4:14 Fast English (US)

Separable differential equation, 2.2#24

blackpenredpen - 9 years ago

18,978 views
8:03 Fast English (US)

Separable Differential Equation! 2.2#21

blackpenredpen - 9 years ago

24,402 views
6:34 Fast English (US)

separable differential equation with an initial condition

blackpenredpen - 9 years ago

15,555 views
9:12 Fast English (US)

Separable Differential Equation (example 1)

blackpenredpen - 9 years ago

81,330 views
7:25 Fast English (US)

Separable differential equation 2.2#17

blackpenredpen - 9 years ago

26,769 views
4:20 Fast English (US)

separable differential equations, 2.2#10

blackpenredpen - 9 years ago

22,821 views
4:58 Fast English (US)

an all-in-one equation! (logarithm, exponential, and cubic)

blackpenredpen - 9 years ago

240,074 views
13:10 Fast English (US)

A FAKE PRODUCT RULE?

blackpenredpen - 9 years ago

80,735 views
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