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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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Steven M
should I do precalculus first or do an algebra quick review haha this site is so awesome!! Can I get help lolz.. what's your guys' recommendation
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Gabby F
Can you please add subtitles to videos? Thank you so much! (Deaf person here :) )
Krista King Math
Thanks for the feedback Gabby. It's something I'll look into!
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Kyle G
if you have input concerning the "test questions for understanding" that are interspersed throughout a lesson please increase the time to answer from the current unreasonable 5 sec to something more acceptable like 30 sec or more depending on the question. Thank You In Advance and Be Well Kyle E Griffee
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Susan S
very straight forward and easy to follow...well said!
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Tereasa S
Excellent job. If I had to make one suggestion, you should maybe have a real world application included for each topic so students can see the connection.
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