Explore algebraic functions with interactive lessons and exercises on Khan Academy, enhancing your understanding of mathematical concepts and problem-solving skills.

The domain of a function is the set of all possible inputs for the function. For example, the domain of f (x)=x² is all real numbers, and the domain of g (x)=1/x is all real numbers except for x=0.

The range of a function is the set of all possible outputs the function can produce. Some functions (like linear functions) can have a range of all real numbers, but lots of functions have a more …

A function-- and I'm going to speak about it in very abstract terms right now-- is something that will take an input, and it'll munch on that input, it'll look at that input, it will do something to that input.

Sal uses function notation to help Frank figure out how much water he can put in his balloon. Created by Sal Khan.

Understand how the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, chloroplasts, and ribosomes contribute to cellular function and organization. Discover how …

Graphs of exponential growth Learn Exponential function graph Graphs of exponential growth

In one of the practice problems, you have to write a geometric series of a given function (1/ (2-x)). My question is can you re-write it as "1/ (2- (1+x))" and solve the problem?

Use the vertical line test to determine if the graph is a function. If you can draw a vertical line anywhere in the coordinate plane and the line only crosses the graph once, then the graph is a …

Given the graph of a discrete function, Sal shows how to evaluate the function for a few different values.