# Porsche

Most popular questions and responses by Porsche
1. ## linear differential algebra

SOLVE THE SYSTEM (2D+3)(x)-(D+3)(y) = 5 (D+1)(x) - (2D+5)(y) = 7+4t STEPS 1) eliminate x by mulitplying equation 1 with -(D+1) and equation 2 with -(2D+3) After multiplying, what exactly happens to the D and t on the right side? Does it become Dt or 0?

asked on November 12, 2018
2. ## Linear Algebra

Let f(t) = 5+t, g(t)=5-t and h(t) = t^2. Find real numbers x1, x2, x3 so that x1*f(t) + x2*g(t) + x2*h(t) has roots t1 = 2 and t2 = 3

asked on January 29, 2019
3. ## differential algebra

About 10% of lung cancer patients are cured of the disease, i.e., they survive 5 years after diagnosis with no evidence that the cancer has returned. Only 14% of lung cancer patients survive 5 years after diagnosis. Assume that the fraction of incurable

asked on October 26, 2018
1. ## differential algebra

STILL UNSOLVED

posted on October 26, 2018
2. ## differential algebra

I believe 10% are cured, 14% survived so only 4 % or 1/25 are incurable that survive?

posted on October 26, 2018
3. ## cultral diversty

We cannot refuse to answer this question. IT'S AN ASSIGNMENT!

posted on August 20, 2010