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stuck_in_mud

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  1. hi, this question is about quadratic programming, and im trying to formulate this problem, but having no luck with it, the problem is: A company produces 2 types of products A and B, it costs the company £40 to make product a and £70 to make product B. from research it is suggested that if the seeling price of A and B are set as c and D then they will sell x of A and Y of B, given by the realtionship: c = £220 - 3x and d = £250-2y. How would i formulate this problem to give me the answer as: max: -3x^2-2y^2+180x+180y. Please help
  2. hi, im really confused on how to rearrange the following equation (given in attachement) the pi is actually the product and not the value 22/7. by using e^r=1+r to 1-e^-r Can someone help me please.
  3. lol im doing fairly advanced stuff.
  4. i've tried the books, ive tried the internet, but i cant find any thing on it. how would you go about doing this any way?
  5. i need to find the different types of geometrical objects that are represented by the different subspaces of v3® and v4®.
  6. hi, im doing stuff on the gemetrical objects in the subspaces of v3® and v4®, and how they are represented. i'm confused as i don't understand how i am supposed to show this. can someone please help me!!! Thanks
  7. hello, i'm studying vectors, and i have come across spanning, linear independency and bases. i have two bases in v3® which are 1) (1,0,0) , (0,1,0) , (0,0,1) 2) (1,0,3) , (2,1,4) , (1,0,0) i have shown these to be linearly independent as this is one of the points that must be met for a base to occur. The second point is to show that they are spans of their own set, for this i know they must have some linear combination. This is the bit that is confusing me, how can i show the linear combinations, basically how do i prove the second point of having a base. Any ideas?
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