Khan Academy
7 713 vidéos, +5 400 000 abonnés

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duréevues
Gettysburg12:172 726
Antietam part 27:212 205
Trp operon6:363 047
Second partial derivative test11:522 484
Second partial derivative test example, part 27:431 263
Second partial derivative test example, part 16:111 239
Second partial derivative test intuition10:431 451
Warm up to the second partial derivative test11:371 421
Saddle points5:502 066
Multivariable maxima and minima8:402 086
Khan Academy Talent Search 20162:1878 801
Commodity money vs. Fiat money8:187 652
Standard of deferred payment and legal tender5:341 970
When money stops being money: Hyperinflation11:435 229
Functions of money6:101 683
Operons and gene regulation in bacteria10:101 482
Time differences | Math | 3rd grade | Khan Academy4:302 041
Telling time to the nearest minute: unlabeled clock | Math | 3rd grade | Khan Academy3:191 240
Telling time to the nearest minute: labeled clock | Math | 3rd grade | Khan Academy3:441 406
RC natural response - example3:192 077
RC natural response - derivation10:481 394
RC natural response intuition7:271 424
RC step response - intuition10:901 169
A capacitor integrates current9:211 469
Capacitor i-v equations8:411 177
Conventional current3:571 468
Quadratic approximation formula, part 29:50811
Quadratic approximation formula, part 17:101 053
What do quadratic approximations look like4:422 255
Vector form of multivariable quadratic approximation8:35692
Expressing a quadratic form with a matrix8:20749
The Hessian matrix6:10944
Quadratic approximation example12:90463
Local linearization9:131 739
What is a tangent plane3:201 411
Computing a tangent plane9:41838
Controlling a plane in space10:401 064
Circuit Terminology8:302 387
Apostrophes and plurals | The Apostrophe | Punctuation | Khan Academy2:511 957
Choosing between its and it’s | The Apostrophe | Punctuation | Khan Academy2:311 781
BONUS: History of the possessive apostrophe | The Apostrophe | Punctuation | Khan Academy10:57977
BONUS: History of the apostrophe | The Apostrophe | Punctuation | Khan Academy5:40946
Introduction to the possessive | The Apostrophe | Punctuation | Khan Academy3:45959
Possession for words ending in “s” | The Apostrophe | Punctuation | Khan Academy1:511 162
Advanced (plural) possession | The Apostrophe | Punctuation | Khan Academy4:111 019
Introduction to the apostrophe | The Apostrophe | Punctuation | Khan Academy4:501 137
Introduction to contractions | The Apostrophe | Punctuation | Khan Academy3:361 354
Finding missing side when given area | Math | 3rd grade | Khan Academy3:401 085
Creating rectangles with a given area 2 | Math | 3rd grade | Khan Academy2:47567
Creating rectangles with a given area 1 | Math | 3rd grade | Khan Academy3:28686
Multiplying by tens word problem | Math | 3rd grade | Khan Academy2:30976
Interpreting picture graphs (paint) | Math | 3rd grade | Khan Academy1:231 243
Interpreting picture graphs (notebook) | Math | 3rd grade | Khan Academy3:45564
Interpreting bar graphs (colors) | Math | 3rd grade | Khan Academy4:50526
Interpreting bar graphs (alligators) | Math | 3rd grade | Khan Academy2:131 252
Time word problem (puzzle) | Math | 3rd grade | Khan Academy1:301 007
Identifying unit fractions word problem | Math | 3rd grade | Khan Academy1:42835
Comparing fractions with same numerator | Math | 3rd grade | Khan Academy3:46756
Comparing fractions with the same denominator | Math | 3rd grade | Khan Academy3:10948
Recognizing fractions greater than 1 | Math | 3rd grade | Khan Academy1:30924
Perimeter word problem (skating rink) | Math | 3rd grade | Khan Academy2:28413
Perimeter word problem (tables) | Math | 3rd grade | Khan Academy4:00773
Finding perimeter when a side length is missing | Math | 3rd grade | Khan Academy3:312 585
Finding missing side length when given perimeter | Math | 3rd grade | Khan Academy4:551 483
Measuring area with partial unit squares | Math | 3rd grade | Khan Academy3:161 634
Transitioning from counting to multiplying to find area | 3rd grade | Khan Academy3:22509
Decomposing shapes to find area (subtract) | Math | 3rd grade | Khan Academy3:12692
Decomposing shapes to find area (add) | Math | 3rd grade | Khan Academy3:36992
Decomposing shapes to find area (grids) | Math | 3rd grade | Khan Academy2:51981
Harmonic Functions10:561 898
Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy7:571 557
Cutting shapes into equal parts | Math | 3rd grade | Khan Academy1:362 003
Mesh current method (step 4 solve)12:121 275
Mesh current steps 1 to 39:16916
Sketching exponentials - examples7:21908
Sketching exponentials7:50930
Jim Crow part 47:583 468
Jim Crow part 34:102 159
Jim Crow part 25:461 951
Jim Crow part 16:333 958
Translation (mRNA to protein)14:113 305
Meet the Comma | Punctuation | Grammar | Khan Academy3:595 128
Commas in space and time | The Comma | Punctuation | Khan Academy3:192 292
More uses for commas | Punctuation | Grammar | Khan Academy3:241 866
Commas in dialogue | Punctuation | Grammar | Khan Academy3:001 500
Three ways to end a sentence | Punctuation | Khan Academy2:523 593
Salutations and valedictions | Punctuation | Grammar | Khan Academy2:182 526
Commas and introductory elements | Punctuation | Grammar | Khan Academy4:351 772
BONUS: The Oxford comma | Punctuation | Grammar | Khan Academy3:432 326
Punctuating a list | Punctuation | Grammar | Khan Academy1:511 734
Appositives | Punctuation | Grammar | Khan Academy3:001 708
Darwinism vs. Social Darwinism part 210:182 293
Darwinism vs. Social Darwinism, part 18:473 764
Application of the fundamental laws (solve) | Electrical engineering | Khan Academy8:403 257
Transcription and mRNA processing10:254 679
Ideal sources | Circuit analysis | Electrical engineering | Khan Academy2:553 035
Polymerase Chain Reaction PCR9:543 315
DNA cloning and recombinant DNA11:804 084
Speed and precision of DNA replication3:554 353
Gel Electrophoresis11:003 303

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