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Math Help - finite geometric sequence

  1. #1
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    finite geometric sequence

    ok i need some help guys. if anyone is good with a graphing calculator then please help me out.

    the directions are to ........(use a graphing utility to find the sum of the finite geometric sequence.) the problem is i dont know how to use my graphing calculator.

    10
    ∑ 10(3/5)^(i-1)
    i=1


    anyone have a clue? if so can you please teach me?
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  2. #2
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    Quote Originally Posted by flexus View Post
    ok i need some help guys. if anyone is good with a graphing calculator then please help me out.

    the directions are to ........(use a graphing utility to find the sum of the finite geometric sequence.) the problem is i dont know how to use my graphing calculator.

    10
    ∑ 10(3/5)^(i-1)
    i=1


    anyone have a clue? if so can you please teach me?
    \sum_{i=1}^{10} 10\left(\frac{3}{5}\right)^{i-1} = <br />

    10 \sum_{i=1}^{10} \left(\frac{3}{5}\right)^{i-1}
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  3. #3
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    Quote Originally Posted by skeeter View Post
    \sum_{i=1}^{10} 10\left(\frac{3}{5}\right)^{i-1} = <br />

    10 \sum_{i=1}^{10} \left(\frac{3}{5}\right)^{i-1}

    thank you thank you thank you. you just save helped me on about 7 other problems by showing me that.
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  4. #4
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    Quote Originally Posted by skeeter View Post
    \sum_{i=1}^{10} 10\left(\frac{3}{5}\right)^{i-1} = <br />

    10 \sum_{i=1}^{10} \left(\frac{3}{5}\right)^{i-1}
    i just wanted to ask did you remember how to do that or is there a manual somewhere i can buy to learn to do that?
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