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Math Help - Merging Equations

  1. #1
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    Merging Equations

    Hey Everyone,

    Unfortunately I'm having a tough time trying to figure out this problem:

    Equation 1: 16\times I_1 = 100\times I_1^2 + 300\times I_2^2 + 0.02^2\times R

    Equation 2: I2 = I1 - 0.02

    Equation 3: I1 = 0.015 + \frac{1.5 + 0.02R}{75}

    I'm supposed to merge everything together and solve for R, but my calculations go right off the drawing board. I'd appreciate any help!

    Thanks!
    Last edited by ElectroNerd; February 7th 2010 at 04:44 PM.
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  2. #2
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    Better fix your LaTeX champ

    and I_2 = I_1 - I_2 \implies 2\times I_2 = I_1
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  3. #3
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    Quote Originally Posted by pickslides View Post
    Better fix your LaTeX champ

    and I_2 = I_1 - I_2 \implies 2\times I_2 = I_1
    I added the "times" to my LaTeX, is that any better?

    I don't understand your statement that I_2 = I_1 - I_2 \implies 2\times I_2 = I_1

    When you have the "imply" symbol, does that mean it's equal to the other equation? That doesn't seem to be correct.
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  4. #4
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    Does anyone get 150 as the answer?
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  5. #5
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    I_2 = I_1 - I_2 \implies 2\times I_2 = I_1

    I'm sorry pickslides, I wrote the wrong equation...here is the correct one:

    I_2 = I1 - 0.02

    It's also fixed it in my first post.
    Last edited by ElectroNerd; February 26th 2010 at 09:21 AM.
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