MCR3U


 * MCR 3U**
 * Note1: Friday April 13,In Class Assignment. If not finished, continue at home. Check the answers....**
 * Monday April 16 Test Chapter 2**
 * Note 2: Regarding question8 about the puppy and the new pen he(the puppy) will need when he will grow up....after reading the question we realize that it's not about minimizing or maximizing anything, we know perimeter 18 and the area 21. No need for completing the square. It is a question about possibility to build or not that pen. Are there two real numbers x and y such that 2(x+y)=18 and x*y=21???? Isolate x or y from the first relation: y=9-x. Replace y in second relation and solve the quadratic: x2-9x+21=0. It was on the board today, Thu. We were supposed to check if there are any REAL solutions. Find discriminant. You 'll see that Delta is negative. So, no real solutions, no chance for the breeder to build that large pen for his fast growing puppy. He has to buy more fence or build a smaller pen. DONE.**
 * Note3 If any questions, ask. I'll try to answer.**
 * Note 3: If you want to ask questions, you need to sign in, become a member.**

Review Ch2 Solutions