Recent content by PBJinx

(x) * (x) * sin(x) ----- ------ sin(x) sin(x) is equivalent to x * x ---- sin(x) at this point in the second one, we would get zero over zero using hopital's rule we take the derivative of the top and then the bottom giving us 2X/cos(x) which the limit can be taken of easily I think...

This is less a homework problem and more conceptual help for a homework problem I have been given the information for a revenue equation and a cost equation I set up Newton's Method with XN+1=\frac{revenue-cost}{the derivative of the top} where both revenue and cost are...

thank you for the help. i went to the professor today and figured it out with him.

yes, sorry i am not used to using typing it out this way

1.\frac{dx}{dt}= \stackrel{9 -12}{2 -1} x(0)=\stackrel{-13}{-5} So I seem to be having issues with this problem There are 2 eigenvalues that I obtained from setting Det[A-rI]=0 That gave me r^{2}-8r+15=0 solving for r and finding the roots i got (r-3)*(r-5)=0 so the...

ahhhh That is very helpful!

alright, i figured out that i was typing it into the homework wrong the answer is ends up being (1/9)(step(t-9)(e^(5(t-9))-e^(-4(t-9))))

Homework Statement Find the inverse laplace tansform of this http://webwork.math.umass.edu/webwork2_files/tmp/equations/fe/0f481f24ae927e11e80569093b71321.png My question is can i pull out the e-9s and just find the inverse of \frac{1}{s2-1s+20} I broke it up into...

Ahh. thank you sir, got it right now

The equation i currently have is (-7s+52)/(s^2-8s+16) I need to convert it into a partial fraction decomposition to do a inverse Laplace Transform, but i seem to be stuck with the algebra of the what I am supposed to do. The equation I am supposed to use to set them is A/(s+a) +...