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Is a formula good even if you do not know the variable

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cmisavage
 
Reply Wed 4 May, 2005 02:20 pm
I am a bit confused so here is my question. When using a formula and you know one variable to a greater degree of accuracy and you do not know the other variable in greater accuracy can you still solve the formaula?

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Brandon9000
 
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Reply Wed 4 May, 2005 02:37 pm
Yes. When you solve a formula for some variable, you are working with symbols. For example, if you solve the equation:

x^2 + 2x + 1

for x, you are solving in order to learn the value of x, so you certainly don't need to know it beforehand.
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