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Day 15 of good habits

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evanthebouncy! United States12796 Posts March 17 2008 04:42 GMT #1 Nothing major, proving theorems and getting ready for the midterm on Tuesday in Linear algebra, got bit excited and YEAH i'm super pumped!!! Don't stop me noww! I've gotta proving theorems I'm having the lemma Don't stop me now~~ If u want to see a full proof Just gimme a chalk Ooo Don't stop me now! cuz I'm proving the therm Don't stop me know Cuz I'm busy proving theorems and I dun wanna stop at alllllllllllllLLLlllll~~~ I'm a linear transform, on my way to W like a matrix defying the law of nonlinearity! I'm an eigenvector passing by! Like self invariant subspace! I wanna Go O O and I look still the sammmmmme After the transform yeah! after twohundred powers of matrix and I am still my self! I'm traveling all around I wanna make a complete diagnal matrix out of UUU! wish me happy study hours! Queen song for u!

Muirhead United States556 Posts March 17 2008 05:04 GMT #2 Yay linear algebra ^^ Challenge Problem: Let A, B be symmetric square matrices of the same size with real entries. Suppose that there are matrices X and Y, also of the same size but with possibly complex entries, such that AX+BY has nonzero determinant. Prove that A^2+B^2 is invertible. You should probably wait until after your exam to work on it.

ahrara_ Afghanistan1715 Posts March 17 2008 05:14 GMT #3 Barely had an A in Lin. Algebra. Are you taking the upper div course? I'm so glad I'm done with math... switched majors from physics to journalism. After differential equations I realized there was nothing in it for me =).

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