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    Hi. I am asked to leave the answer in exact form. What does it mean?

    I have f =sqrt{60}
    Should I leave it likes this or make 2sqrt{15}?
    Thanks
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    like this f =sqrt{60}

    exact means full, unchanged form.
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    (Original post by Brutal)
    Hi. I am asked to leave the answer in exact form. What does it mean?

    I have f =sqrt{60}
    Should I leave it likes this or make 2sqrt{15}?
    Thanks
    Either is fine. They are both exact. Just don't give it as 7.76 or whatever.

    (Original post by d1ck)
    like this f =sqrt{60}

    exact means full, unchanged form.
    Uh, no.
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    It is depressingly common for people to think that exact means all the digits on the display. Of course \sqrt {60} is much better if written2\sqrt {15} but this would be simplest exact form.

    I don't think I could leave it as \sqrt {60} but (in an exam) there is always a risk that if you put in extra lines that do unnecessary tidying up, you might make an error and you are wasting time.
 
 
 
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