Introduction to minimum and maximum points | Functions | Algebra I | Khan Academy

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Sal explains all about minimum and maximum points, both absolute and relative.

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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Great video, Sal. Very clear... as ever. We're all trying to match your teaching standards on our own video tutorials.

Mypeexam
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Countinue this great work it helps us alot.Thank for your hardwork

zaraastley
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How can i find the previous videos on this topic?

moeed
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3:37 Does anyone know why he used Open Interval at this part? Thank you.

ian.ambrose
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It sounds like the video starts in the middle somewhere. At the start there was no explanation  as to what you are doing. You talk a mile a minute. Can't see whatever you're working on. I could go on

Heathers_Crochet_Designs
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just being curious and by no mean of offense. Shouldn't it be f(c) > f(x), instead of using bigger or equals to?
since we are talking about "maximum" which means something that is definitely the highest one. please correct me if i am wrong. 

arniawanarniawan
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please explain where and what H is why did you not say where your getting or why your using h?

__Ryan_
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ok im following...however your f(a) is throwing me off.  Wouldn't your point on the y axis (0, ?) be the relative maxima?  if not, then why?

icebergmike
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I cant understand what is that F(a) and F(b) why did he give each point a function i dont get the point maybe i cant understand nothing can anybody explain for me the video

abdulrahmanalaa
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and i am STILL looking for a pp to rap myserlf around, this 4skin needs a home man. :(

skin