Recent content by angel

its working now, thanks

thanks alot

initila condition is not provided, but you can assume it to be 16.

ok, i know how to find the laplace of h(t-a) the answer is: e^-as/s ok, i understand how u got the values but what I am really confused on is to apply the laplace on everything, even the first bit. i know what the answer should be, its: x(t) = (x0 - h/k)*e^kt + h/k * H(44-t) + h/k...

thats the method i am using, but I am not sure how to apply it to this equation.

hi, yes H is the heaviside unit step.

hi how do u find the laplace of the function below: x'(t) = kx(t) -hH(44-t) k is the rate which is >0, x(t) is the actual population, h is the harvesting rate

ok im trying to solve the following equation using standard aux method: d^2y/dx^2 + 3dy/dy +2y = cos x with conditions x(0)=-3 and x'(0) = 3 my aux eqn is: ae^x + be^-2x and my yp is; a sin kx + b cos kx i differentiate this twice and substitute into the original...

hi, im trying to find the laplace of t^3/e^5 i get the answer as: 6/e^5.s^4 could someone please confirm this for me. thanks

hi, Could someone please show me how these are a linear transformation please: 1) T(s u + r V) s and r are scalars and u and v are vectors. 2) composite function: u : v thanks

well I am trying to maximise the revenue, so i have to formulate this problem. that's what I am stuck on.

hi, im having a bit of trouble understanding how to formulate rhis problem, can someone please help me? the problem is: there are two types of product A and B. In a monthly prod. the shop makes 16 of A when it makes a profit of £1000 per model, and this drops to 12 when the profit is...

thanks a lot for that.

an example is provided below which will help u understand it: a shop produces two types of sweet machines A and B. it costs the shop £40 to make each machine A and £70 to make each machine of B. from research it is suggested that that if the selling price of A and B are set as F and P then...

hi, Just wondering if anyone knows how to do Quadratic Programming, I'm attempting some questions but I am confused. So anyone know how to do it?