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    This is for a science paper but I guess this a maths question.

    It asks me how much of a substance is produced in 1 minute. The previous answer to the previous question was, say, 50 ml/min to the minus one (can't insert the proper notation here).

    So how do I get ml/min-1 into ml/min?

    Thanks. I know this is probably really basic, I just can't remember it.
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    (Original post by KatieBlogger)
    This is for a science paper but I guess this a maths question.

    It asks me how much of a substance is produced in 1 minute. The previous answer to the previous question was, say, 50 ml/min to the minus one (can't insert the proper notation here).

    So how do I get ml/min-1 into ml/min?

    Thanks? I know this is probably really basic, I just can't remember it.
    Are you sure the question says \displaystyle 50 \, \, \frac{\text{ml}}{\text{min}^{-1}}? If so, that's very weird. Could you possibly post a picture of the question or so?
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    (Original post by Zacken)
    Are you sure the question says \displaystyle 50 \, \, \frac{\text{ml}}{\text{min}^{-1}}? If so, that's very weird. Could you possibly post a picture of the question or so?
    Hi, sorry I think I may not have been clear. It's written as 50 ml min-1 (the -1 is to the power of).

    I'm trying to work out what that is just in normal minutes.
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    (Original post by KatieBlogger)
    Hi, sorry I think I may not have been clear. It's written as 50 ml min-1 (the -1 is to the power of).

    I'm trying to work out what that is just in normal minutes.
    Ha, that makes much more sense. The -1 as the power simply means 50 \, \, \text{ml} \, \, \text{min}^{-1} = 50 \, \, \frac{\text{ml}}{\text{min}}.

    I.e: You read 50 ml min-1 as 50 ml/min as 50 ml per minute as in one minute, there is 50 ml.
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    (Original post by Zacken)
    Ha, that makes much more sense. The -1 as the power simply means 50 \, \, \text{ml} \, \, \text{min}^{-1} = 50 \, \, \frac{\text{ml}}{\text{min}}.

    I.e: You read 50 ml min-1 as 50 ml/min as 50 ml per minute as in one minute, there is 50 ml.
    Thanks so much. Would you mind explaining what the minus 1 means and why it needs to be there?
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    (Original post by KatieBlogger)
    Thanks so much. Would you mind explaining what the minus 1 means and why it needs to be there?
    Do you know your indices laws? \frac{a}{b} is another way of writing ab^{-1}. So when we write something to the power minus one, we really mean 1/something. But we use the minus one to save space.
 
 
 
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