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Math Help - sine of a number line

  1. #1
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    sine of a number line

    I have a number line set up from 0 to 1 divided into 50 chunks. I want to take the sine of this line so that the middle is zero and the ends (0 and 1) are both 1. In other words, I want my life to go from 3pi/2 to pi/2 instead of 0 to 1. How can I do this?

    thanks
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by baf1319 View Post
    I have a number line set up from 0 to 1 divided into 50 chunks. I want to take the sine of this line so that the middle is zero and the ends (0 and 1) are both 1. In other words, I want my life to go from 3pi/2 to pi/2 instead of 0 to 1. How can I do this?

    thanks
    You want to map the interval [0,1] onto [a,b], so you want:

    f(x)=x\times(b-a)-a

    so f:[0,1] \to [a,b]

    -nothing to do with trig.

    CB
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  3. #3
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    thank you!
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