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Thread: Math.pow

  1. Dec 16th, 2010, 04:13 AM #1
    OT²O
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    Resolved Math.pow

    Can someone please explain Math.pow to me?
    I have this formula for compound interest and my question is, is year the only exponent even though 1 + rate, year are all in the ()?
    Also could you explain the formula to me? i just cant wrap my head around it. Why do you add 1 and why is it exponential?
    Code:
    amount=principal*Math.pow(1 + rate, year);
    Last edited by OT²O; Dec 16th, 2010 at 08:31 PM.
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  2. Dec 16th, 2010, 08:00 AM #2
    akhileshbc
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    Re: Math.pow

    Check this link: http://math.about.com/library/weekly/aa042002a.htm

    This is how it looks like:
    Code:
    amount=principal*((1+rate)^year)

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  3. Dec 16th, 2010, 06:29 PM #3
    OT²O
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    Re: Math.pow

    Yeah that's what i thought but why when you use math pow you have to enter two parts separated by a comma and only one of them is the actual exponent? Like in this example 1+rate is not an exponent but it is in the math.pow but year is an exponent?
    Code:
    Math.pow(1 + rate, year);
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  4. Dec 16th, 2010, 08:23 PM #4
    kfcSmitty
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    Re: Math.pow

    Quote Originally Posted by OT²O View Post
    Yeah that's what i thought but why when you use math pow you have to enter two parts separated by a comma and only one of them is the actual exponent? Like in this example 1+rate is not an exponent but it is in the math.pow but year is an exponent?
    Code:
    Math.pow(1 + rate, year);
    pow is a function of the math object. Pow requires 2 arguments, the first being a double for the base number and the second being the number of the exponent.

    So Math.pow(8,3) would be the same as 8^3

    http://download.oracle.com/javase/1....e,%20double%29
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  6. Dec 16th, 2010, 08:30 PM #5
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    Re: Math.pow

    Quote Originally Posted by kfcSmitty View Post
    pow is a function of the math object. Pow requires 2 arguments, the first being a double for the base number and the second being the number of the exponent.

    So Math.pow(8,3) would be the same as 8^3

    http://download.oracle.com/javase/1....e,%20double%29
    That makes perfect sense thank you.
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