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214
bio website andrew-christianson.github.io
location Los Angeles, CA
age 22
visits member for 2 years, 7 months
seen Apr 12 at 17:31

Oct
2
revised Rate of increase in the area of a square
spelling correction, clarity
Oct
2
suggested suggested edit on Rate of increase in the area of a square
Oct
1
revised Which loan type is cheapest?
clarity & grammar
Oct
1
suggested suggested edit on Which loan type is cheapest?
Oct
1
answered Equation of a rectangle
Sep
29
comment Calculating edge coordinates of arrowhead. (pretty basic trigonometry)
You're welcome, glad to help.
Sep
27
answered Calculating edge coordinates of arrowhead. (pretty basic trigonometry)
Sep
27
comment Combinatorics - Building strings with symbols from two alphabets
No worries. Just jumped out as a book problem.
Sep
27
awarded  Commentator
Sep
27
revised Economics formula
removing overzealous HW tag
Sep
27
suggested suggested edit on Economics formula
Sep
27
comment Economics formula
@anon I think you're right, I'll untag it as such. Got a bit over zealous. Chris if this is a homework problem, please retag it as such. Additionally, i think "1n" must mean natural log, they play into the calculation on elasticity. Chris should be the one to clarify, though.
Sep
27
comment Calculating edge coordinates of arrowhead. (pretty basic trigonometry)
I think @pic has the right idea. Alternatively, you could repharse the same problem as vector addition. Namely, have A to B be a vector, and create a vector each for the left and right edges of the arrow head. Given b, the angle of the body of the arrow from horizontal, the right would be <S*cos(b+pi+a) , S*sin(b+pi+a)> and the left <S*cos(b+pi-a) , S*sin(b+pi-a)>. C, then is V_AB + V_left and D is V_AB + V_right.
Sep
27
comment Combinatorics - Building strings with symbols from two alphabets
Welcome to math.SE! If this is a homework question, please tag it as such. Additionally, the community may be more willing to help if you provide some context for the question and show your work up to the point you get stuck - it's easier to teach you how to do the problem than give you the answer.
Sep
27
comment Economics formula
Oh, and this is math.SE not econ.SE, so you may want to define elastic/inelastic in the question.
Sep
27
comment Economics formula
A few things. First, welcome to math.SE! I tagged this as homework as that's how the question reads. HW questions are fine, but if it's not, feel free to retag. Second, the community here is more than willing to help you learn, but not to just give you the answers. If you provide some more context and offer an explication of your work this far, people we be much more willing to help. Thirdly, I left you '1n' in paraens in your equation because I'm not sure what you're referring to. Any additional information w.r.t to that part of equation will be helpful.
Sep
27
revised Economics formula
Typeset, tag
Sep
27
suggested suggested edit on Economics formula
Sep
26
awarded  Organizer
Sep
26
revised What is the probability of getting 3 aces, a king and a queen
latexify + tags