Algebra i Definition and 74 Threads

It's helpful to express an equation on a graph where we plot at least 2 points. Watch and we'll show you. Practice this lesson yourself on KhanAcademy.org ri...

We're flipping the last video on its head and doing the opposite. This time we give you the graph and ask you to express it as an equation. Practice this les...

In simple addition we learned to add all the numbers together to get a sum. In algebra, numbers are sometimes attached to variables and we need to make sure ...

We've learned about order of operations and combining like terms. Let's layer the distributive property on top of this. Practice this lesson yourself on Khan...

This example of combining like terms in an expression gets a little hairy. Listen closely. Practice this lesson yourself on KhanAcademy.org right now: https:...

Learn how to simplify algebraic expressions by combining like terms. The expressions in this video have decimal and fraction coefficients. Practice this less...

"Equivalent algebraic expressions exercise Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/c...

We match the expressions to their meaning in this example. We're reinforcing our knowledge of linear expressions. Practice this lesson yourself on KhanAcadem...

Let's practice matching expressions to their meaning in this example of interpreting linear expressions. Practice this lesson yourself on KhanAcademy.org rig...

Watch the next lesson: https://www.khanacademy.org/math/algebra2/functions_and_graphs/undefined_indeterminate/v/why-zero-divided-by-zero-is-undefined-indeter...

Multiple arguments for what we could get when we divide zero by zero. We will later see that this can be considered indeterminate Watch the next lesson: http...

Where did the word "Algebra" and its underlying ideas come from? Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/over...

Hello! On this Fall Semester, I will be taking the Linear Algebra with Proofs (Friedberg), Analysis I (Rudin-PMA) or Abstract Algebra I (Dummit/Foote), and Combinatorics (Brualdi). Since I can take only one from Analysis I or AAI on Fall, I am trying to figure out if the introductory...

I am a Physics major looking into Mathematical Biology (perhaps) in the future, and regardless of where I go, I'm trying to build a solid math background for myself. I've taken (or plan to take): Linear Algebra I Calculus I, II, III, IV ODE Non-linear ODE PDE Complex Variables (I will...

Hey guys, I'm hoping to get some advice on how to approach this course I'm currently enrolled in. I'm currently enrolled in linear algebra 1, while I think they're pretty generic for outlines, this is what my school says: Before the midterm I was doing the assignments and, for the most part...

Author: Nathan Jacobson Title: Basic Algebra I Amazon Link: https://www.amazon.com/dp/0486471896/?tag=pfamazon01-20 Prerequisities: Contents:

Homework Statement So the question is, Prove the following: Let A be an n x n matrix. If there exists a vector v in Rn that is not a linear combination of the columns of A, then at least one column of A is not a pivot column. Homework Equations The only relevant theorem I think is the...

Homework Statement An even integer can be written as the expression 2n. Find three consecutive even integers with a sum of 54. Homework Equations None, this was a challenge question. The Attempt at a Solution I got that the sum of the digits in 104 (2*52) equals 54 but cannot see...

I would like to check my reasoning for this problem to make sure I understand what an orthogonal matrix is. Homework Statement Determine if the matrix is orthogonal. If orthogonal, find the inverse. \begin{pmatrix} -1 & 2 & 2\\ 2 & -1 & 2\\ 2 & 2 & -1 \end{pmatrix} Homework...

I need a book to self-study, because in Physics we don't have this discipline. The only mathematics I learned were linear algebra and calculus for multivariate functions. The things I need to know are (these is my university's Algebra I): - Integers - Groups, rings and fields - Polynomials'...

As I mentioned in another post I'm trying to keep up with my math class and since I didn't finish high school there's some things I have to learn on my own. Heres a few things that I didn't figure out in the class. This is in chronological order, things are gradually getting more complex so I'd...

Homework Statement K = {x C S7 | 2x=2, {1,4}x={1,4}, {1,5,7}x={1,5,7}}. Draw Lattice Diagram for K.2. The attempt at a solution I've looked at this for about 30 minutes and came to the conclusion that there are 140 unique solutions to this mapping, and I know for a fact that the professor...

this is from a Diff EQ but but its just algebra i think?? I'm just working through an example here and its say to solve the equation (y/k)=(ynot/k)/((ynot/k)-[1(ynot/k]e^(-rt)) for t. then in the next line it shows it solved for e^(-rt)={(ynot/k)(1-(y/k)}/{(y/k)(1-(ynot/k)} now i have...

Perhaps this belongs better in the career guidance forum (in which case, please move it moderator) but I thought it would be more specific to this forum. I'm planning to study physics at the university level sometime in the future. My plan is to work on the first year math credits first, to...