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Old 01-07-2008, 10:25 PM   #1
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Default Algebra Help

I need help with some physics and I'm either blanking on basic algebra or completely missed this physics concept. So i'm hoping im making a stupid mistake in my algebra:

(4.275*10^-5)/((0+X)^2) = (3.195*10^-5)/((.185-x)^2)

Solve for X and lemme know whatcha get.
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01010010011001010110010001100010011001010110000101 11001001100100
010011110111010101110100

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Old 01-07-2008, 10:37 PM   #2
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Default Re: Algebra Help

FYI I got .099213376
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Old 01-07-2008, 11:05 PM   #3
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Default Re: Algebra Help

If you have a graphing calculator this is real easy man. In Y1, put (4.275*10^-5)/(0+X)^2)-(3.195*10^-5)/(.185-x)^2)

in Y2, put 0

Then press Zoom->0: Fit

After it graphs go to 2nd->Trace-> 5: Intersect.

When it prompts for first curve, press enter. Second curve, press enter. Then when it asks to Guess move the cursor over to where it looks like the line intersects and press enter. Then it will give you the value of X.

I got 1.365, but I might be wrong.
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Old 01-08-2008, 12:35 AM   #4
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Default Re: Algebra Help

lol whats that say? Haven't had a physic/math class in 2-3 years.
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Old 01-08-2008, 12:37 AM   #5
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Default Re: Algebra Help

Quote:
Originally Posted by mayorredbeard View Post
I need help with some physics and I'm either blanking on basic algebra or completely missed this physics concept. So i'm hoping im making a stupid mistake in my algebra:

(4.275*10^-5)/((0+X)^2) = (3.195*10^-5)/((.185-x)^2)

Solve for X and lemme know whatcha get.
This is like a foreign language to me.
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Old 01-08-2008, 01:07 AM   #6
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Default Re: Algebra Help

Mayor seriously, do what I suggested... it got me through all of high school, including calc lol.
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Old 01-08-2008, 01:39 AM   #7
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Default Re: Algebra Help

or in your graphing calc (if ti-83) go to Math:solver then 0 = (4.275*10^-5)/((0+X)^2) - (3.195*10^-5)/((.185-x)^2): alpha enter

i got 9.99991

but it would help if i saw the problem....i'm a math physics major
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Old 01-08-2008, 02:14 AM   #8
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Default Re: Algebra Help

Even that way I still get what I got before, 1.365...
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