Recent content by andrelutz001

Thank you

Hi everyone Homework Statement Consider the following 4 x 4 matrix: A = [[6,3,-8,-4],[0,10,6,7],[0,0,6,-3],[0,0,0,6]] Find the eigenvalues of the matrix and their multiplicities. Give your answer as a set of pairs: {[lambda1,multiplicity1],[lambda2,multiplicity2],...} 2...

I’m starting to understand the methods mentioned above after looking through 4 different books. In some cases the books that I’m using are approaching similar problems in a different way. Although at times confusing I now realize that in most cases there is more than one way to solve a problem...

Hi everyone, I’m not 100 percent sure if this is the right section for this question but I guess I will find out very soon. I have come across some new material as part of my undergraduate engineering course relating to engineering mechanics, in particular truss analysis using the method...

Thank you for replaying danago. That definitely helps. So after dividing everything by 9 I’m getting: cos(2x)+1/9sin(x)=1 I can use the double angle formula to reduce the equation to one type of trig function, hence: 1-2sin^2(x)+1/9sin(x)=1 -sin^2(x)+1/9sin(x)=0 And i now have a...

Hi All, I’m currently attempting to work ahead on my precalculs and I’m looking at trigonometric equations. I seem to have a bit of a problem with this example (i haven’t had too many issues with the rest of the exercises), 9cos(2x)+sin(x)=9 (solve for x in the interval 0 <=x <=2pi.) I’m...