I just started this topic by myself, not coping very well, just need a few tips on how to solve the following questions (working out would be awesome 
):
a) A piece of wire 6 metres longis cut into 2 parts, one of which is used to form a square, and the other to form a rectangle whose length is 3 times its width. Find the lengths of the two parts if the sum of the areas is a minimum.
For the above question, it was really messy with fractions, and when i tried to use the quadratic formula, delta was negative, so i was stuck.
b) A large open area is to have a portion surrounded by a rectangular fence. This rectangle is then divided into 6 rectangles by one dividing fence parallel to its length, and 2 parallel to its breadth. If the total length of fencing available is 1200m, find the maximum area.
Thanks a lot, been asking heaps of questions lately
):a) A piece of wire 6 metres longis cut into 2 parts, one of which is used to form a square, and the other to form a rectangle whose length is 3 times its width. Find the lengths of the two parts if the sum of the areas is a minimum.
For the above question, it was really messy with fractions, and when i tried to use the quadratic formula, delta was negative, so i was stuck.
b) A large open area is to have a portion surrounded by a rectangular fence. This rectangle is then divided into 6 rectangles by one dividing fence parallel to its length, and 2 parallel to its breadth. If the total length of fencing available is 1200m, find the maximum area.
Thanks a lot, been asking heaps of questions lately