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# Calculus I Essentials

47 CQ
11 Lessons
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3 CQ
1. Functions vs. Equations
A lesson with Krista King Math

Lost in the world of calculus? Start at the beginning by learning about functions - number ‘machines’ that serve as the basis for all of calculus.

Lost in the world of calculus? Start at the beginning by learning about functions - number ‘machines’ that serve as the basis for all of calculus.

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2 CQ
2. How to Use the Vertical Line Test
A lesson with Krista King Math

You've got a graph, but how do you know whether or not it represents a function? Use the vertical line test! Learn the test, then practice on several examples.

You've got a graph, but how do you know whether or not it represents a function? Use the vertical line test! Learn the test, then practice on several examples.

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4 CQ
3. Limits and Continuity
A lesson with Krista King Math

Take the confusion out of limits with integralCALC! Learn how to solve for limits and infinite limits, and what to do in the event of a point discontinuity.

Take the confusion out of limits with integralCALC! Learn how to solve for limits and infinite limits, and what to do in the event of a point discontinuity.

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3 CQ
4. Prove the Limit Doesn't Exist | Example
A lesson with Krista King Math

Take your calculus skills to the limit! Learn how to find the left-hand and right-hand limits, and then use those to prove that the general limit does not exist.

Take your calculus skills to the limit! Learn how to find the left-hand and right-hand limits, and then use those to prove that the general limit does not exist.

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5 CQ
5. Precise Definition of a Limit | Example
A lesson with Krista King Math

Know your limits! Learn about the precise definition (or epsilon delta definition) of a limit, and how it can be used to prove that a limit is true.

Know your limits! Learn about the precise definition (or epsilon delta definition) of a limit, and how it can be used to prove that a limit is true.

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rudolf g
Thank you for you course, though, for me, 10 seconds are insufficient for reading, contemplating, and answering the self-check questions. Is there a way to change the 10 second preset? Or to just pause? I know how to pause the video, but this seems to not work for the questions.
matt n
If you quickly select an a random answer, the skip timer will stop, then you can think about it and select a more accurate response.
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Hung P
Excellent!
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Andy A
I understand this stuff and I love your teaching.
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Andy A
I liked this lesson. thanks very much.
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Glories A
This makes perfect sense. Now, hopefully it will be simple in complicated problems. Thank you very much
Krista King Math
you're welcome! :)
Cyndi P
now i am begining to understand this subject more
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