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Math Help - vector operations word problem.

  1. #1
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    vector operations word problem.

    suppose you manage a mutual fund that invests in 1000 companies. Let S be the vector in Rn whose ith component is the number of shares of company i that you've today. Let P be the vector in R^1000 whose ith component is today's price per share of company i's stock. Express the total value of your holdings in terms of vector operations.

    Sol: I tried using the dot product. Let S be [s_1, s_2,.......s_i] and P be [p_1, p_2,.....p_1000]. So the total value would just be s_1(p_1)+s_2(p_2).....and so on? Am I right?
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  2. #2
    MHF Contributor Swlabr's Avatar
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    Quote Originally Posted by Taurus3 View Post
    suppose you manage a mutual fund that invests in 1000 companies. Let S be the vector in Rn whose ith component is the number of shares of company i that you've today. Let P be the vector in R^1000 whose ith component is today's price per share of company i's stock. Express the total value of your holdings in terms of vector operations.

    Sol: I tried using the dot product. Let S be [s_1, s_2,.......s_i] and P be [p_1, p_2,.....p_1000]. So the total value would just be s_1(p_1)+s_2(p_2).....and so on? Am I right?
    Yup, that's correct.

    Yet another real-world application of mathematics!
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